I won't mod you down but I'll ask a simple question: How can you not understand an interface where pointing with your index finger will do any of the tasks you would be used to with an iPhone, most likely with the exact same gesture?

Click Browser
Click Address Bar
Type Address
Win?

There are ways, using the windows API, for any process run with Debugger privileges (any Administrator really) to read,write,terminate,create threads, etc in any other process. This was true in Windows 95 and still is in XP and probably Vista, except for protected processes.

It's not like they can just create a pointer and address the other memory space but using the API they can achieve the same thing.

This is what allows programs like xfire to inject into your game process or (as they mention in TFA) allows Warden to peek inside all processes to see if they are evil.