You must first define these concepts and create a way to implement them; writing some common words is not enough.
Yes of course, it's only (well, was) only version 0.1.
Interestingly you failed to spot the rather glaring error I made. 20 checks at 20ms each will only take maximum of 400ms, not nearly 5 seconds as I stated. I've fixed that and can't really complain as I suspect you're the only person who read it :p