How much dirt is in a hole three feet long, three feet wide, and three feet deep?

The more of me that you take The more of me you’ll have left behind What am I?

I tell you your wants and needs; I am one of three. Remove my first and last, and there is nothing left to see.

I am taught without a teacher, born without a womb. I feast on old thoughts to fashion something new. I speak your tongues, mimic your hand, and paint without paint, I learn by guessing patterns, not by feeling faint. What am I?

Riddle me this batman, who sells me doesn’t want me, who buys me doesn’t use me and who uses me hasn’t a clue.