Yes, the climate is changing. It's the first time a species on the planet has caused the change, in the space of a few hundred years, instead of millennia.
Yes, the Earth is not an isolated system. That's why we live in a SOLAR SYSTEM, which for all intents and purposes IS isolated from the rest of the universe, apart from the odd comet.
I guess you are just so much smarter than Thomson, Clausius, Nernst and Fowler. Where should I send your Nobel prize, genius?
Describing what is settled science as mumbo jumbo is simply a demonstration of your abject ignorance.