5 ms·

> Not 19, not 21, 20. That's how you remove rigidity? I mean, the fact that the 20% figure is only a rough guideline is so obvious it doesn't need to be stated

> Not 19, not 21, 20. That's how you remove rigidity? I mean, the fact that the 20% figure is only a rough guideline is so obvious it doesn't need to be stated.