2-minute read
Studies suggest the average adult makes over 35,000 decisions a day. One thousand years ago, it was closer to a few dozen.
What happens when a brain evolved for slow, deliberate choices is thrown into a hyper-connected, always-on world?
How Decision Load Exploded Through History
1,000 Years Ago (1025 AD) Your great-great-ancestor's biggest daily decision? "Should I eat this now or save it for later?" Food came from what you grew, hunted, or traded locally. Work was your inherited role for life. Your social circle included maybe 50-150 people you'd know from birth to death.
Decision count: 20-50 per day.
500 Years Ago (1525 AD) Trade routes brought slightly more food variety, but still seasonal and limited. A few skilled trades emerged, but you stayed geographically bound to your village. News traveled by word of mouth or seasonal messengers.
Decision count: 100-200 per day.
100 Years Ago (1925 AD) Early supermarkets offered 10-20 menu options. Industrial jobs created new professions. Radios and telephones widened social connections, but interactions remained mostly local. Daily newspapers delivered a few major stories at a time.
Decision count: 1,000-2,000 per day.
10 Years Ago (2015 AD) Food delivery apps presented dozens of cuisine options. The gig economy made career pivots possible. Social media created global networks requiring constant digital interaction management. News became a 24-hour cycle with algorithm-driven feeds.
Decision count: 15,000-25,000 per day.
Today (2025 AD) AI curates infinite global food options. Work involves hybrid/remote/gig combinations with monthly skill demands. Multiple social platforms create constant "who to respond to" micro-decisions. News delivers infinite global stories in real-time through hyper-personalized feeds.
Decision count: 35,000+ per day.
The Exponential Curve
For centuries, decision volume grew slowly. Then it exploded in the last 100 years, with the steepest acceleration in the past decade.
Meanwhile, your prefrontal cortex, the brain region handling these decisions, hasn't evolved at all. You're running modern decision software on Stone Age hardware.
The Biological Breaking Point
Every decision requires your prefrontal cortex to fire neural signals using glutamate, your brain's primary excitatory neurotransmitter. In 1025 AD, your ancestor's brain processed maybe 50 glutamate-requiring choices daily. Your brain processes 700 times that amount.
Glutamate accumulates in synapses throughout the day, creating what neuroscientists call "excitotoxic stress." This buildup impairs cellular communication, making each subsequent decision harder than the last.
By afternoon, you're making choices with a cognitively congested brain that your ancestor never experienced.
Who Feels It Most
Decision fatigue hits different groups disproportionately. Working parents manage two full-time decision environments simultaneously. Remote workers face constant micro-choices about when, where, and how to work. Healthcare professionals make life-altering decisions while managing hundreds of administrative choices.
The cognitive load varies, but the biological mechanism remains the same: too much glutamate, too little clearance.
The Modern Survival Skill
In our ancestors' world, physical stamina determined survival. In today's world, sustained decision-making capacity is what sets you apart.
The breakthrough in neuroscience focuses on supporting your brain's natural glutamate clearance processes. Instead of pushing through decision fatigue or masking it with stimulants, cutting-edge research addresses the root cause: helping your brain clear the biological "traffic jam" created by modern decision demands.
This isn't about making fewer decisions. It's about maintaining decision quality when your brain faces 35,000 daily choices.
Unlock the key to sustaining high quality decisions
