@newton_john
Maybe like at the start of the twentieth century
A lot of physicists at that time thought there was nothing new to discover - all that was left was measuring things more accurately. Mind you, they had no idea what powered the sun. Then in the greatest failed experiment of all time, Michelson and Morley failed to measure the drift of the presumed aether enabling light waves. The speed of light was the same, no matter how fast you were moving towards or from the thing you were looking at. Then radioactivity raised its ugly head ...
... maybe there's not much fundamental physics left to discover - apart from what consciousness is, and dark matter, and dark energy. Our picture of the world is dramatically different from 100 years ago, and today we can see back about 14-billion years though we cannot see past our event horizon.

