In the wizard's class description, it says that
When you find a wizard spell of 1st level or higher, you can add it to
your spellbook if it is of a spell level you can prepare and if you
can spare the time to decipher and copy it.
Is the ability to decipher a wizard's spellbook therefore unique to wizards, or would someone without any wizard levels still be able to decipher a spellbook to read what the spells are?