Ticket 526: #true and #false considered gratuitous

Peter Bex writes:

The "full word" syntax of booleans is totally gratuitous.

They are thought to add a little extra readability, but though implementations must support them, users certainly don't have to use them. R2RS provided them in the forms #!true and #!false, which were dropped in favor of the shorter #t and #f in R3RS.