My preference is
this type of comment
The best secure deletion method appears to be a claw hammer, some goggles, and a few spare minutes.
But if you do that with your HDD, you might damage the shiny coffee mug coasters inside.
Position is the first derivative of velocity, defined as lim(h->0) (v(t+h)+v(t))/h. As h approaches 0, this equation blows up to plus or minus infinity.
It can do that, but physical derivatives are usually well-behaved. Even General Relativity is mostly well-behaved except for the singularities inside black holes, and maybe the ones outside (toroidal) black holes. Take v(t) = 0 as a trivial example. lim(h->0) (0 + 0)/h. As h approaches 0, this equation is equal to 0. Scientists accept the "odd" behaviors of quantum mechanics because they agree with experiment. A deterministic theory would have "odd" behaviors too. If you want to see why, here might be a good starting point.
Moneyliness is next to Godliness. -- Andries van Dam