perl has no function arg list

Im learning a little perl and everything about perl is done in the worst and most convoluted way. Prime example being that function definitions dont have an argument list but rather an implicit list that is extracted from within the function by @_.
Why is there no explicitly declared parameter list. I got banned from #perl on freenode for asking this.

>>11
You don't know much about how languages are implemented then. You might not explicitly create the refs yourself, but they're there in a lot of languages, even C# and Java have this problem.