This is a Lexicon entry: the mechanism, when it shows up, and the countermeasure. The full correction, with real-world cases and the audit prompt, hasn't been written yet.
Definition
The brain's tendency to overestimate short-term pain and underestimate long-term pain and rewards. We choose $50 now over $100 in a year but we'd choose $100 in 6 years over $50 in 5 years - revealing the irrationality of our time preferences.
When it shows up
Immediate temptation versus delayed benefit: sugar now versus weight loss later, scrolling now versus rest later, drink now versus clarity tomorrow. Modern context: A product manager agrees in Q1 to deliver a feature by Q4. In Q3, when the deadline approaches, they negotiate an extension - not because the work changed but because the cost of delivery is now immediate while the benefit of the original commitment feels distant.
Failure mode
The value of the immediate option expands dramatically as it approaches in time, overwhelming the delayed option's calmer value. The math says delay; the moment says now.
Countermeasure
Pre-commit from a distance. Decide in the morning what you will do in the afternoon. The present self has calibrated preferences; the moment-self has distorted ones. When correction costs more than the bias: When the future outcome is genuinely uncertain: discounting it steeply may be rational, not hyperbolic. In environments with high volatility, present bias is an adaptive hedge. The correction is most valuable when the future outcome is certain and the only question is timing.
Related traps
Also connected in the map10 more, locked
Credit & first seen
DiscoveredTversky, A.&Kahneman, D. (1974).'Judgment under Uncertainty: Heuristics and Biases.'Science 185(4157), 1124-1131 source ↗
Also revealed
Entry #66 of 631 in The Lexicon · see the full Lexicon