I'm hopeless with F, I just know how to convert to C and then it makes sense.
Body temperature is silly because everyone's normal body temp is a little bit different, and it varies from minute to minute depending on activity level, outer temperature, fluid levels...
Now Kelvin. There's a scale that makes sense! Well, the lower end of it does at least...
As for pBooks, I use book marks or dog ears depending on whether it's mine or not, and a pulp fiction paperback or a hardcover or a non-fiction... for finding my exact place, well let's just say it's not uncommon for me to reread the same page a few times!
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