Forgetting

The brain is not like a computer. 

There is no unused disk space for your future memories. 
The brain is always full.  For a new memory to form, an old one must be forgotten. 
You never know which memory was sacrificed because that's the nature of forgetting. 

'Liquid' - 2018 

Are cities like human memories? 
There's not enough room for all the buildings, so if we need a new one, we have to knock down an old one. 
Every time you go by a new building, your awareness of it gets stronger and your memory of what was there before gets weaker.

'Things Forgotten' - 2018

If you want to remember the way something used to be, you must never go there now.