It's my first time to have heard of this methodology or I might have heard it in the past but can't remember but either way I might as well try it. It seems simple and effective.
I think i'ts 50:rent, 30, bills, 20 savings or something like that (I put about 50 into saviings instead - because if I didn't I'd end up like exstasie said and start floating what I earn to what I spend).
I would say that this depends on your financial capacity. Plenty of people live paycheck to paycheck, and they almost certainly keep track of what they spend and how much they need. You can obviously afford to ignore more as you amass more of it, but even at comfortable levels, I'm sure people are keeping track of how much their next holiday is going to cost, how much they need to make for that dream car, etc. Even Bill Gates must be paying attention to how much certain things cost (maybe that next jet or private island lmao); it just so happens that normal grocery items are already so far beneath him that he couldn't even come up with a range.
It can be easy to fall under this perception if you're satisfied with where you are, but ultimately, it's not just a number. The only time you don't realize that it's there is when you don't need to use it for anything.
Yeah I guess if you don't have to price up every transaction you make then you forget about the small things and don't pay attention to anything - if you don't have much in the way of savings then you have to price up everything.
This could ultimately be something I do subconsciously also and just not notice but it did seem fairly interesting to look at...