Bob: Look, I've built a revolutionary new filesystem called BobFS! The way I store files is super cool; each block contains the block number of the next block of the file, like a linked list! With this invention, I can store arbitrarily large files! Alice: This is a terrible idea. Your filesystem will be extremely slow except for in certain situations. Who is correct? If Alice is correct, give an example of a slow file access pattern and a fast file access pattern, and explain why there is difference