Why are there 3 slots for fuel?

I've actually wondered this forever. Afaik, Yes, IF the fuel in slot 1 runs out, it 'switches' automatically, more specifically the 3 slots are like a little miniature container.

But, like... Why would you put that much fuel in there? 6000 wood in just 1 slot already runs it for ages. And you aren't likely to put multiple fuel types in there (IE, Coal, if that even burns) since it doesn't round robin between them... So why 3 slots?

Originally posted by Invader Zim:

Originally posted by Shurenai: I've actually wondered this forever. Afaik, Yes, IF the fuel in slot 1 runs out, it 'switches' automatically, more specifically the 3 slots are like a little miniature container.

But, like... Why would you put that much fuel in there? 6000 wood in just 1 slot already runs it for ages. And you aren't likely to put multiple fuel types in there (IE, Coal, if that even burns) since it doesn't round robin between them... So why 3 slots?

You don't know that coal counts as fuel? You've played this game how long and never tried to use coal in a forge?!

Uhhh, something like 2500 hours. And no, I never have. Wood is just so easy to acquire, and literally grow just outside my door, So I'd never thought to burn coal which can be used for crafting, mainly for gunpowder. And I do need Lots of gunpowder, So..