Business - Derek Thompson - The 11 Ways That Consumers Are Hopeless at Math - The Atlantic
(7) We're easily made dumber by alcohol, time, decisions.
When you're young and drunk at a bar, you're more likely to do stupid things with strangers. "Am I fully assessing this complex romantic situation?" is a difficult question to answer on seven glasses of wine, so we're more likely to ask ourselves a simpler question: "Is s/he hot?"
When we're drunk, stressed, tired, and otherwise inattentive, we're more likely to ask and answer simple questions about buying things. Cheap candy bars and gum are situated near the check-out at grocery stores because that's where exhausted shoppers are most likely to indulge cravings without paying attention to price.
Boozy lunches are good for deal-making because alcohol narrows the range of complicating factors we can hold in our heads at once. If you want somebody to take an under-examined risk, get him boozed, tired, or ego-depleted.