I apologize if I got things wrong. I was just going with whatever is here: http://37signals.com/about
"Jason Fried is the co-founder and President of 37signals."
and
"Jason co-wrote all of 37signals books, and is invited to speak around the world on entrepreneurship, design, management, and software."
with that kind of workload, I assumed you wouldn't have enough time for anything else. I never said whatever you do is useless. Far from it. Non-technical work that is focused at growing a company is more important than any technical work. After all, what can you do with an insanely great product that you can't sell because you didn't prepare for it properly?