Yeah. It's hard to tell which combinations of skills will be useful. It also changes over time. Math + programming ("Data Science") is in much higher demand tod

Yeah. It's hard to tell which combinations of skills will be useful. It also changes over time. Math + programming ("Data Science") is in much higher demand today than it was 10 years ago. Knowing what people want + programming is valuable because it falls into the framework of (doing the right things) + (executing well.) Then something like teaching skills + programming leads to the Khan Academy, which was something that essentially wasn't possible before. On the other hand, I would assume that programming + juggling doesn't have much synergy-it seems like most things you could do with programming + juggling could be done either with juggling skills or programming skills. Somebody will probably prove me wrong, though ;)