This, the author is a phd surely he should see his own bias here?

"I found it annoying to use negative numbers for temperatures that aren't really that cold, and then have 35℃ be grossly hot." living in Sweden i've always used 0 as the "feeling" middle point, temperatures usually ranging between -20 / +30 C, feels very natural.

That saying the task seems quite fun, would be nice to replicate it coming from a celcius background.