let me guess you are under 30? when someone has a spouse, two kids, a mortgage to pay, a whole bunch of daily chores to finish, pressure from manager to finish

let me guess you are under 30? when someone has a spouse, two kids, a mortgage to pay, a whole bunch of daily chores to finish, pressure from manager to finish under tight deadlines, a simple depth first search looks like a very big problem at the end of the day. People pay cognitive tax that robs them from doing intellectually difficult tasks. This is well documented in behavioral economics. "Scarcity: Why Having Too Little Means So Much by Sendhil Mullainathan and Eldar Shafir"