… but I never knew you could smelt Diamond ore or emereld Ore in a furnace until today. How the heck did I never know that. Probably because I never use silk touch on them so never get the ore.

Granted it seems like a pointless waste anyway as you only get one per ore when my fortune 3 gets me up to 4. Still it's pretty basic knowledge to have missed for so long.

So anyway is there anything obvious that you missed for a long time?