Interesting graphs and charts department

[Undertoad]

I saw that post and I am bothered by it. What are all his data points?

Here's the graph at Wikipedia's global warming page, which is similar but more understandable:



Annual mean, that seems like a sensible way to go, since that's all four seasons. Dude's got like twenty data points every 5 years, what is that data?

So... why did he start his graph in 1973? When you look at the annual mean on Wikipedia's graph, 1973 is the end of a three-decade period of no warming, and the beginning of three decades of great warming.

He has cropped the data to fit his narrative, doing exactly what he's accusing the skeptics of doing but on like a century scale rather than a decade scale.

Am I wrong? Tell me where. And how far out should the graph go before we understand what's happening?