It seems kind of weird coming from other languages to not visually distinguish the function call from the arguments if you have the option.
Nobody in Haskell does this (to the point I had no idea it could be done until I tried it) so clearly it's something you get used to, but boy does it look real alien to me.
Space is the symbol that denotes a function call in Haskell.
It is indeed different from other languages, that require an argument list in parenthesis. It can be different because values and functions are not ambiguous on Haskell; there isn't such thing as a function with no argument.
