I read that one of the best ways to preserve a seed phrase is to write it on a piece of paper and keep it in a safe place... Somewhere safe could be in your home out of the reach of family members and friends, it could also be a safe deposit box. But not everyone are financially buoyant to afford the services of a deposit box.
I believe we must have seen or heard about fire outbreaks, where buildings are completely erased by fire. Imagine if the owner or occupant of such a building has some Bitcoin assets, and has his/her phone, tablet, laptop and the seed phrase piece of paper in the building and everything was lost to fire. Now, this brings me to the question... Can seed phrase be memorized? It's advisable to memorize seed phrase?
This is a smart question because everyone would have there own opinion about this. It is advisable to memorize your seed phrase if possible and also have a hard copy so that I case you mistakenly forgot the seed phrase, you can easily go back and check it to make the correct.
I have seen genius that can assimilate a long words for years without forgetting them. If you are such a person that can cram some words without forgetting them then that would be nice and also make sure you back it up for reference since our brain does not work like computers.