[SV_BubbleTime]

So… the sun is hotter now than it was what… since the 1950s? The 1850s? The Jurassic period? What scale is do you need to make this claim reasonable?

Also, I see a lot of things presented as facts in your comment, you seem to have convinced yourself quite thoroughly.

[jemmyw]

10% every billion years. So negligible on our timescale, but it is significant if you talk about ancient climate conditions like this thread does.

[blueflow]

complex life on earth is half a billion years old (cambrian explosion 550ma ago), so the sun shouldn't be that much of an factor.