When we think we represent something also for ourself to understand the things and the logic, ties between them ... today i recognized i 'talk' to myself -  like say something in thoughts, try to compare...i do it all the time to make decisions (and i did it before just today i thought more on what i do)...have no idea do other also do the same, but somehow we need to represent we have stored in our heads to be able to understand and it is then for some time kept in short term memory...still there is need for keywords that are connected to be able to recover it from short time memory in the moment we need it ...do it shows we try to be prepared for everything - at least for the important things we think we can change ?