חֶשְׁבּוֹן

I directed my mind to understand, to explore, to search out wisdom and explanations, and to understand the stupidity of wickedness and the folly of madness.

“Behold,” says the Teacher, “I have discovered this by adding one thing to another to find an explanation.

Whatever you find to do with your hands, do it with all your might, for in Sheol, where you are going, there is no work or planning or knowledge or wisdom.