Go and look at a bike. The left pedal is threaded backwards. 🚲

It isn't a mistake. It's one of the cleverest small decisions in everyday engineering. The widely cited explanation is precession: as you ride, the load rolls round the thread and would slowly walk a normal thread loose on that side.

Tag the friend who once fought a pedal with a spanner.

How the World Is Built · Century Fasteners · Dubai · centuryf.ae