Why add the trinary operator, opposed to just returning the expression in the parentheses?

Clean and readable. It annoys me in ruby that we have the follow pattern:

x = y
do stuff
x

wonder if there is a better way to think about it

I ran the exact (except for raise('error') vs 'ERROR') same code for Shell (calling ruby) and Ruby. Shell worked but ruby failed. The rounding makes this really annoying.

This was a rough one... hated it until I got it right, but learned some stuff on the way. thanks @duchess_of_objects