[DoreenMichele]

The most important point:

Some researchers argue that the record is simply too sparse to show clearly what is going on, or that there is too much natural variability in the system for researchers to spot long-term trends. But it could also be that the IPCC models are missing something big.

In spite of all the hand-wringing about Global Warming -- which should more accurately be called climate change -- we don't know as much as we so often seem to think we do. The actual data sets don't go back as far as most people imagine and errors in assumptions for models are not uncommon.

[chimprich]

> The actual data sets don't go back as far as most people imagine

How far do you imagine they go back?

[DoreenMichele]

https://news.ycombinator.com/item?id=27658488

[chimprich]

How far do you think "most people imagine" they go back?

I suspect most people actually underestimate how much historical climate knowledge we have.

E.g. ice cores providing knowledge from hundreds of thousands years.