>>40909081
Because it works like that, and is especially important with people that over complicate things. You assume it, you embody it, you BE it in your imagination and it's done.
Your pizza example is dumb. First, you order your pizza and it's done. You don't live in the state of "a fag that does nothing while waiting for a pizza because the pizza will get later". You continue with your life because you know the pizza will be there unless you're boring and retarded.
Second, the assuming is analog to the act of ordering the pizza, yes, but is analog to the WHOLE act of ordering a pizza. You're reducing it a "just a call" but you have to tell the pizza place what kind of pizza do you want, how many, additions, your address, etc. If you do it wrong and call saying just your address and you hang up, or you ask for a tire for your car or maybe ask for a pair of socks or just ask for a pizza but tell them you're not going to pay, etc. you won't get your pizza.
Here is the same, you have to be it in your imagination and you can only be it in the present. You can do it as "I already have been it" to try to say you're being it on the past but it is still the present because you're being the person already have it, so is still the present.