I suspect that a lot about what we call being very intelligent is ultimately out-remembering people around us. I think of all the times in my software career when I did something that others considered very high performance, it either came down to either having more energy than others at tackling a problem they thought was more trouble than it was worth, or just bringing back random knowledge from previous jobs or se…
There is also something to be said about recognizing that A + B can be combined.
And also in accurately judging that other combinations will be useless and avoiding them.