I have read quite a few of your posts on Guesstimates.
I have a doubt
what if I take a wrong assumption which has a huge error in comparison to the correct value then what will happen?
for eg. in one of your posts, you calculated the chocolate consumption in delhi and you took an assumption that population of delhi is 20,000,000 what if I don’t know this while solving and I took it 100,000,000?