The point is you can look something up when you want to. I also am never entirely certain I will not re-read parts of particular books a few years later, and i

The point is you can look something up when you want to. I also am never entirely certain I will not re-read parts of particular books a few years later, and it's just really nice that they're just there, ready to be read even in the middle of the night. Re-acquiring a book may be difficult in certain cases, and takes time even for the easy ones.