[__e]

The PEP acknowledges the existence of high-end statistics libraries. It also notes that the alternative to such libraries are DIY implementations - which are often incorrect in their implementation.

The PEP proposes adding simple, but correct support for statistics.

Apart from high-end libraries being an overkill and DIY implementations being incorrect, the PEP also cites resistance to third party software in corporate environments. This problem is more social than technical though, and I'm not sure what weight must be attached to it