example.
when we gas up our work cars, we have to enter a 6 digit password. i have that memorized.
we then have to key in our odometer. i have coworkers that need to write that down when they exit the car. i found out they use a sharpie and write the pin# on their gas caps or somewhere on the vehicle.
if i take the time and effort to visualize the number written down..it is on lockdown. done. last time i filled up my odo was 89911..VERY easy to remember

chit,,i still remember it.
you blurb out a phone number and it may as well be written in smoke. gone.
i still remember the firing order of a small block chevy. i cant remember the beloved flat-6. i dont know why.