[Mike Darancette]

It's not an opinion. Even discounting evidence of the prevailing cause for, the evidence against causality by the prior primary climate processes is comprehensive.

It might help things along if you can tell us:

1. The causes of the Holocene thermal maximum.
2. Which of those causes might be present now.
3. How do we know these things.

The only thing I can see as a difference is that we have Algore whining about it and the media and government stooge scientists telling horror stories.

[cogitator]

1. The causes of the Holocene thermal maximum.

I can't do any better than Wikipedia's article.

Holocene climatic optimum

2. Which of those causes might be present now.

None. We're in a low-Milankovitch influence period.

3. How do we know these things.

Examination of climate-related variables (Wikipedia indicates data from sediments) and calculation of the climatic effects of Milankovitch cycles.