Often inventions happen unexpectedly for the inventor himself, and not just for witnesses - eyewitnesses. Yes, they often lead to long hard work, exhausting work, knowledge and experience, erudition. But sometimes luck! And just an observation! And - an accident! Find penicillin - an accident? Detection in space, in zero gravity, turning the nut, changing the direction of rotation - an accident? And this ... More ... Just have to look! Under the feet! And on the sides! Look carefully and look!

After a positive review, the buyer will receive 14% of the purchase price in the form of a gift certificate.