Hello @sciencetech :)

I like how you manage to keep your posts concise! I was most drawn to the part you covered the history of endoscopes here. It always fascinates me to learn the processes we have gone through to get to the point we are. Especially in the field of health. I have the impression that the 50's was a great decade; one that also marked the arrival of anti-psychotic drugs, for example :)

All the best to you :D