[PheonixPharts]

> Fahrenheit is not an absolute scale

So if someone showed body temperature measured in Kelvin you would argue that it should start at 0? That seems even more ridiculous.

> Why shouldn't they?

Because for the vast majority of stock it would appear to be a straight line every single day? Can you find me a example of a stock trading app for a company who's price is > $100/share that shows intraday price activity on a zero scale?

Likewise most co2 charts start around 300ppm since that has been roughly where the lower bound of atmospheric co2 levels have been for all of human history.

The last time co2 was 0 on the planet earth it was just a molten rock so what's the meaning of showing this value? It's not even theoretically possible that co2 could be that low baring alien life sucking the atmosphere off the planet.

Can you clarify why the scale should start at 0 for these things? How is that anywhere close to an honest representation?