This assumption was based off 'you cannot introduce a new function if its name is already used as a variable's name, or introduce a new variable if its name is already used as a function's name.' from https://secure.csse.uwa.edu.au/run/help2002?p=np&opt=U151 and 'a function's parameters and any other identifiers used in a function body are local to that function, and become unavailable when the function's execution completes'.

I must've misunderstood the meaning of 'becomes unavailable', is the correct rules that only function identifiers must be wholly unique, variables can be reassigned within their scope, and any local identifiers (function parameters + identifiers used in a function body) can be assigned/used as 'new' variables outside of their scope?

Thank you for all of the help!