Too many ads, can't read. For an old experiment like this there is probably lots of better sources available, incl. Wikipedia: https://en.wikipedia.org/wiki/Be

Too many ads, can't read. For an old experiment like this there is probably lots of better sources available, incl. Wikipedia: https://en.wikipedia.org/wiki/Behavioral_sink?wprov=sfla1 https://en.wikipedia.org/wiki/Behavioral_sink?wprov=sfla1