[CottonBall]

Classically, "second derivative" is "acceleration (or deceleration)", and seems to fit in the context here.

NOW I finally get it. I've heard the term applied to finances and never really paid attention. But now it makes sense if it's related to calculus.

[DuncanWaring]

To the best of my knowledge, financial “derivatives” bear no relationship whatsoever to calculus “derivatives”.

I don’t understand the financial variety worth a darn either.

Hell, I barely understood the calculus variety...