Edison was an interesting engineer/scientist — he applied little science to his experiments and was brute force — try thousands of possibilities and hope that one works.
Tesla’s observation was that if Edison had spent a little thought and design time on his experiments, he would have been more successful. Tesla worked for Edison for a short bit redesigning and optimizing Edison’s designs.
Still, hard work and determination pays off.
The later battle between the two is interesting too and almost humorous except that animals met horrible deaths by electrocution to prove that AC power was evil.
Redlands was a brilliant mind. I’ve read a lot of our wireless tech was spawned by him.