It is both not doing and doing physics. That is the TaiChi way.

Actually, the TaiChi way would be "not-doing" (Wei Wu) physics. See: http://www.the-taoism-for-modern-world.com/wei-wu-wei-not-do...

It's the other way around, wu wei--the absence of effort. The extra wei in the front is the "doing" of "not doing" (wu wei) which seems to be something particular to this author. https://en.wikipedia.org/wiki/Wu_wei