Scott Duncan
Kate Butler's Statistically Significant Other (She spends all her time with him) is pretty hard-core. I can move at a decent speed with him, but he's like a Lithium Battery; Full power and then without warning...done.
It takes about 4 hours to wear him down, and he knows more than everyone here combined. He has the HUGE advantage of a common frame of reference. I can get concepts across QUICKLY.
...and NO questions that reveal the asking party is clueless! It's LUXURY these days.