Originally Posted by

**CliffordK**
So, what is the probability that a post will be bumped 10 years after the last reply?

Ok, more of a statistics issue, but many of the statistics equations have a strong calculus basis.

Now that would be a good stats problem.

BTW, for those that are interested, the analysis of bicycle stability is pretty complex. A good overview is in Bicycling Science. The 2nd edition, imho, may be more clear than the 3rd, but both are good.