Question re inodes

[Ed Wishart]

This is not a bug, just a question that I don't know where to post.
The 2.10 BSD file system uses 64 byte inodes containing 40 bytes
of address space.  They use only 21 of these bytes for access to
data blocks, 4 of these being direct addresses.  Why waste this
space when there are addresses left over that could be used to 
access more direct blocks?   My source is the FS(5) manual page.