a weightier harmonic series 

15:34 One kilogram of steel is heavier than one kilogram of feathers

@13:40 the last term in the sum should be k(n-1) not n(k-1)

"Suct that"

Re: the warmup. The series individually become ln(stuff) in the limit, but at different rates. Are we sure it's fine to "smush" them together under the same lim operator? I guess I need to brush up on my "limited" skills... Edit: Wait, the rates converge in the limit. I get it now.

2:57 but we do, it's in "warm" :P

what brand of chalk does Michael use?

This is body shaming😂