I think people were asking themselves the same question at the end of the 19th century, when everyone thought mankind had mastered all of Physics. Suddenly so m

I think people were asking themselves the same question at the end of the 19th century, when everyone thought mankind had mastered all of Physics. Suddenly so much new stuff(Relativity, Quantum Mechanics) was discovered and flipped our world view upside down. So I think there will always be something to be discovered or invented.