In 1941 Richard Owen said that the dinosaurs were almost hot blooded.
Feathers predate birds.
I also got a chance to go to the American Museum in New York, which helped my interest.
I also discovered the only complete Brontosaurus skull.
To me it seems that the warm blooded dinosaurs replaced advanced mammal ancestors that were warm blooded, also.
Traditional dinosaur theory is full of short circuits. Like the antiquated wiring in an old house, the details sputter and burn out when specific parts are tested.