"If a tree falls in the woods and no one is around to hear it, does it still make a sound?" Attribute access is reading a value, invoking a function is differe

"If a tree falls in the woods and no one is around to hear it, does it still make a sound?" Attribute access is reading a value, invoking a function is different (as mentioned, using a stack, etc.), although it is certainly possible a function only reads and returns a value. All that to say my answer is yes, providing flow control mechanisms makes it flow control... and falling trees make a sound!