"Fast movement during exercise does not produce fast muscles, or strong muscles, or large muscles, it produces only one thing, a thing to be avoided, it produces injuries."

Previous Quote

There is no reason why an extraphysical general principle is necessarily to be avoided, since such principles could conceivably serve as useful working hypotheses. For the history of scientific research is full of examples in which it was very fruitful indeed to assume that certain objects or elements might be real, long before any procedures were known which would permit them to be observed directly.

— David Bohm