I've often wondered if it is convenience rather than IQ that is the limiting factor for this. If I approach a bin with two hands full of garbage, how much time am I going to spend using half a hand to open an elaborate lock mechanism? Not much.
In addition, if someone reaches the "I need two hands to open this and both hands are full" stage and can not figure out a solution, it would appear that IQ is still the limiting factor.
mechanical_bear|3 years ago
mryan|3 years ago
fennecfoxen|3 years ago
thrwyoilarticle|3 years ago