simply a very interesting video ...

There's a ton of stuff in the real world that wouldn't work as "designed", but works because there is "compliance" by accident.
 
There's a ton of stuff in the real world that wouldn't work as "designed", but works because there is "compliance" by accident.

That reminds me of MotoGP bikes, which used to be engineered for rigid frames until they found out that too much rigidity caused the rider to lose control under the high torque of acceleration while exiting a turn. Frame flexibility is especially important for TT riders (such as the Isle of Man TT) where the road surface has imperfections like patched potholes, grooves from domestic traffic, or waves from underground flexing. And TT is where crashes are considered fatal until proven otherwise.
 
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