Now I really know you're lost! You are giving dubious simplistic black and white examples & extrapolating to real world complex ones e.g. climate. You don't know how the various factors (yes including the sun & CO2) interact in the Earth to drive climate one way or the other over the long term. Nobody does! I'll reiterate: the starting conditions are not known precisely & the interactions are poorly understood. Which of those two statements is false? Even if the second IS false, my arguement holds.
To believe it's as simple as the sun being a little brighter or if CO2 (a minor greenhouse gas BTW) rises a little the planet will get warmer is naive. Not even a holder of a Nobel award for climate science know how it all works or can predict it.
Keep digging if it pleases you.
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