Is Michael Spivak Wrong!?
My text says,
In general, if ε > 0, to ensure that
|x²sin(1/x)| < ε,
we need only require that
|x| < ε and x ≠ 0, provided that ε ≤ 1. If we are given an ε which is greater than 1 (it might be, even thought it is "small" ε's which are of interest), then it does not...