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The world is better than yesterday, but our brain refuses to believe it
Ask the people around you: is the world better or worse than it was fifty years ago? Most people answer “worse.” Yet almost all the available objective data points in the opposite direction. This paradox is not an accident: it is wired into our biology.
A bias written into evolution
The negativity bias is a universal tendency of the human brain to give more weight to negative information than to positive information, even when both have the same intensity. The American psychologist John Cacioppo measured this phenomenon directly by studying the brain's electrical activity: when faced with negative images, the cerebral cortex produces measurably more intense electrical activity than it does with positive or neutral images.
This is not a design flaw: it is a feature inherited from millions of years of evolution. For our ancestors, missing a threat — a predator, a poisonous plant, an aggressive rival — could mean death. Missing good news, at worst, meant a missed opportunity. The asymmetry of consequences shaped a brain that prefers to overestimate risks. This bias helped Homo sapiens survive. Today, it makes us systematically pessimistic.
Hans Rosling's world vs. the world in our heads
In 2018, the Swedish physician and statistician Hans Rosling published Factfulness, a book that became a classic of data-based reasoning. His method was simple: ask experts, professors and journalists basic questions about the state of the world, then compare their answers with the real data.
The result was astonishing. Almost everyone questioned — including the most educated — had a view of the world that was far darker than reality. A few figures to calibrate:
- Global life expectancy rose from 31 years in 1800 to more than 72 years today — an unprecedented leap in human history.
- Child mortality (children under 5) fell from 76 per 1,000 births in 2000 to about 37 per 1,000 in 2022, according to UNICEF data. In 1960, this rate exceeded 180 per 1,000 in most developing countries.
- The share of people living in extreme poverty has been cut by more than half in twenty-five years, according to the World Bank.
These trends are not anecdotal. They represent billions of improved lives. But ask anyone in the street whether poverty in the world is rising or falling, and most will tell you it is rising. They are wrong — but they do not know it.
The media as amplifiers of the bias
If our brain is already shaped for the negative, news media have often, without explicitly intending to, adapted to this mental architecture. The implicit rule of journalism has long been: good news is not news. A plane landing safely is ordinary. A plane crash is an event.
The digital era has worsened the phenomenon. The algorithms of social platforms optimize engagement — and engagement is maximized by outrage, fear and negative surprise. Research in media psychology has shown that headlines containing negative words generate statistically more clicks than positively worded headlines, even when the content is equivalent.
“The human brain is like Velcro for bad news and Teflon for good.”
— Rick Hanson, neuroscientist and psychologist
A bias, but not a fate
Understanding the negativity bias does not mean ignoring it or sliding into naive optimism. Real problems exist: environmental crises, wars, persistent inequalities. The point is not to deny these realities, but to put them back into a fairer perspective.
Rosling himself insisted on this point: this is not about optimism, but about factfulness. Seeing the world as it is — with its progress and its challenges — is more useful than seeing it exclusively through the filter of bad news. A doctor who diagnoses only serious illnesses even in healthy patients is not a cautious doctor: he is a poor diagnostician.
A few concrete practices can soften the effect of the bias:
- Consume longitudinal data rather than snapshots: how does an indicator change over time, not just what is its value today?
- Distinguish the event from the trend: a terrorist attack is a tragic event, but organized violence worldwide has broadly declined over the past century, according to the work of Steven Pinker.
- Limit exposure to continuous news feeds: several studies have shown that excessive consumption of negative news is associated with higher anxiety, without necessarily improving understanding of the world.
What knowing changes
There is something liberating in understanding that our pessimism is not an objective reading of reality, but an evolutionary response whose settings were calibrated for an environment that no longer exists. We no longer chase mammoths or flee predators on the savanna. Yet our amygdala reacts to a news feed as if we did.
This awareness does not change the world. It changes the way we read it — and that is already a lot. Because a more accurate view of reality is the first condition for acting effectively rather than anxiously.
The world is better than yesterday, but our brain refuses to believe it
Ask the people around you: is the world better or worse than it was fifty years ago? Most people answer “worse.” Yet almost all the available objective data points in the opposite direction. This paradox is not an accident: it is wired into our biology.
A bias written into evolution
The negativity bias is a universal tendency of the human brain to give more weight to negative information than to positive information, even when both have the same intensity. The American psychologist John Cacioppo measured this phenomenon directly by studying the brain's electrical activity: when faced with negative images, the cerebral cortex produces measurably more intense electrical activity than it does with positive or neutral images.
This is not a design flaw: it is a feature inherited from millions of years of evolution. For our ancestors, missing a threat — a predator, a poisonous plant, an aggressive rival — could mean death. Missing good news, at worst, meant a missed opportunity. The asymmetry of consequences shaped a brain that prefers to overestimate risks. This bias helped Homo sapiens survive. Today, it makes us systematically pessimistic.
Hans Rosling's world vs. the world in our heads
In 2018, the Swedish physician and statistician Hans Rosling published Factfulness, a book that became a classic of data-based reasoning. His method was simple: ask experts, professors and journalists basic questions about the state of the world, then compare their answers with the real data.
The result was astonishing. Almost everyone questioned — including the most educated — had a view of the world that was far darker than reality. A few figures to calibrate:
- Global life expectancy rose from 31 years in 1800 to more than 72 years today — an unprecedented leap in human history.
- Child mortality (children under 5) fell from 76 per 1,000 births in 2000 to about 37 per 1,000 in 2022, according to UNICEF data. In 1960, this rate exceeded 180 per 1,000 in most developing countries.
- The share of people living in extreme poverty has been cut by more than half in twenty-five years, according to the World Bank.
These trends are not anecdotal. They represent billions of improved lives. But ask anyone in the street whether poverty in the world is rising or falling, and most will tell you it is rising. They are wrong — but they do not know it.
The media as amplifiers of the bias
If our brain is already shaped for the negative, news media have often, without explicitly intending to, adapted to this mental architecture. The implicit rule of journalism has long been: good news is not news. A plane landing safely is ordinary. A plane crash is an event.
The digital era has worsened the phenomenon. The algorithms of social platforms optimize engagement — and engagement is maximized by outrage, fear and negative surprise. Research in media psychology has shown that headlines containing negative words generate statistically more clicks than positively worded headlines, even when the content is equivalent.
“The human brain is like Velcro for bad news and Teflon for good.”
— Rick Hanson, neuroscientist and psychologist
A bias, but not a fate
Understanding the negativity bias does not mean ignoring it or sliding into naive optimism. Real problems exist: environmental crises, wars, persistent inequalities. The point is not to deny these realities, but to put them back into a fairer perspective.
Rosling himself insisted on this point: this is not about optimism, but about factfulness. Seeing the world as it is — with its progress and its challenges — is more useful than seeing it exclusively through the filter of bad news. A doctor who diagnoses only serious illnesses even in healthy patients is not a cautious doctor: he is a poor diagnostician.
A few concrete practices can soften the effect of the bias:
- Consume longitudinal data rather than snapshots: how does an indicator change over time, not just what is its value today?
- Distinguish the event from the trend: a terrorist attack is a tragic event, but organized violence worldwide has broadly declined over the past century, according to the work of Steven Pinker.
- Limit exposure to continuous news feeds: several studies have shown that excessive consumption of negative news is associated with higher anxiety, without necessarily improving understanding of the world.
What knowing changes
There is something liberating in understanding that our pessimism is not an objective reading of reality, but an evolutionary response whose settings were calibrated for an environment that no longer exists. We no longer chase mammoths or flee predators on the savanna. Yet our amygdala reacts to a news feed as if we did.
This awareness does not change the world. It changes the way we read it — and that is already a lot. Because a more accurate view of reality is the first condition for acting effectively rather than anxiously.
The world is better than yesterday, but our brain refuses to believe it
Ask the people around you: is the world better or worse than it was fifty years ago? Most people answer “worse.” Yet almost all the available objective data points in the opposite direction. This paradox is not an accident: it is wired into our biology.
A bias written into evolution
The negativity bias is a universal tendency of the human brain to give more weight to negative information than to positive information, even when both have the same intensity. The American psychologist John Cacioppo measured this phenomenon directly by studying the brain's electrical activity: when faced with negative images, the cerebral cortex produces measurably more intense electrical activity than it does with positive or neutral images.
This is not a design flaw: it is a feature inherited from millions of years of evolution. For our ancestors, missing a threat — a predator, a poisonous plant, an aggressive rival — could mean death. Missing good news, at worst, meant a missed opportunity. The asymmetry of consequences shaped a brain that prefers to overestimate risks. This bias helped Homo sapiens survive. Today, it makes us systematically pessimistic.
Hans Rosling's world vs. the world in our heads
In 2018, the Swedish physician and statistician Hans Rosling published Factfulness, a book that became a classic of data-based reasoning. His method was simple: ask experts, professors and journalists basic questions about the state of the world, then compare their answers with the real data.
The result was astonishing. Almost everyone questioned — including the most educated — had a view of the world that was far darker than reality. A few figures to calibrate:
- Global life expectancy rose from 31 years in 1800 to more than 72 years today — an unprecedented leap in human history.
- Child mortality (children under 5) fell from 76 per 1,000 births in 2000 to about 37 per 1,000 in 2022, according to UNICEF data. In 1960, this rate exceeded 180 per 1,000 in most developing countries.
- The share of people living in extreme poverty has been cut by more than half in twenty-five years, according to the World Bank.
These trends are not anecdotal. They represent billions of improved lives. But ask anyone in the street whether poverty in the world is rising or falling, and most will tell you it is rising. They are wrong — but they do not know it.
The media as amplifiers of the bias
If our brain is already shaped for the negative, news media have often, without explicitly intending to, adapted to this mental architecture. The implicit rule of journalism has long been: good news is not news. A plane landing safely is ordinary. A plane crash is an event.
The digital era has worsened the phenomenon. The algorithms of social platforms optimize engagement — and engagement is maximized by outrage, fear and negative surprise. Research in media psychology has shown that headlines containing negative words generate statistically more clicks than positively worded headlines, even when the content is equivalent.
“The human brain is like Velcro for bad news and Teflon for good.”
— Rick Hanson, neuroscientist and psychologist
A bias, but not a fate
Understanding the negativity bias does not mean ignoring it or sliding into naive optimism. Real problems exist: environmental crises, wars, persistent inequalities. The point is not to deny these realities, but to put them back into a fairer perspective.
Rosling himself insisted on this point: this is not about optimism, but about factfulness. Seeing the world as it is — with its progress and its challenges — is more useful than seeing it exclusively through the filter of bad news. A doctor who diagnoses only serious illnesses even in healthy patients is not a cautious doctor: he is a poor diagnostician.
A few concrete practices can soften the effect of the bias:
- Consume longitudinal data rather than snapshots: how does an indicator change over time, not just what is its value today?
- Distinguish the event from the trend: a terrorist attack is a tragic event, but organized violence worldwide has broadly declined over the past century, according to the work of Steven Pinker.
- Limit exposure to continuous news feeds: several studies have shown that excessive consumption of negative news is associated with higher anxiety, without necessarily improving understanding of the world.
What knowing changes
There is something liberating in understanding that our pessimism is not an objective reading of reality, but an evolutionary response whose settings were calibrated for an environment that no longer exists. We no longer chase mammoths or flee predators on the savanna. Yet our amygdala reacts to a news feed as if we did.
This awareness does not change the world. It changes the way we read it — and that is already a lot. Because a more accurate view of reality is the first condition for acting effectively rather than anxiously.
