A not-so imaginary conversation between a service personnel and a desperate customer.

Customer: Why can’t I install this application to my laptop?
Service: Which OS are you using?
Customer: Vista.
Service: (Voiceless but audible sigh) Do you use the 32-bit version or 64-bit version?
Customer: What is that?
Service: There are two versions of Vista OS, 32-bit and 64-bit, according to their maximum memory sizes. If you have the 32-bit version, the maximum amount of memory is 4GB. If you have the 64-bit version, much more than that.
Customer: How the hell I know? Nobody told me anything about it.
Service: Well, could you please open the Control Panel and…
Customer: (Why did I put myself into this pitfall?) Okay, just a sec…

The more we try to clarify the situation, the more chaotic it becomes. We should all appreciate Microsoft for turning ourselves into philosophers.