How do Gravity Trains work?

Is it possible to cross all the bridges just once?

Can an infinite hotel ever be truly full?

Why do left and right reverse in a mirror when up and down do not?

Which asymmetric dice should you choose?

Why are digital roots so useful?

Can you survive a bite from a Logonian mamba?

How many infinities are there?

And just how many fingers do Trellians actually have?

These questions and many others...