Find's -true option: what for?

GNU find (and others?) has a -true test along with the normal -name, -mode, -user and so on. From the man page:

-true Always true.

Every time I see the man page I notice this and wonder when it'd be useful. So, give me some examples of when it's useful :~)

From serverfault markdrayton

• When you want to list all files in find format to pipe into another program ?

  I guess it must be more efficient than using -name "*" or something similar.

  Dennis Williamson : `find` with no arguments at all does that.

  Julien Tartarin : Sure, but it's more explicit and has the same syntax with `-true`

  Dennis Williamson : How so?
  From Julien Tartarin

• Might useful for debuging when you are ANDing or ORing statements. So if you have a long command with a complex chain of arguments with lots of AND / OR between the statements, and something that isn't working like you expect, you could replace parts of it with -true to check your logic.

  However, I am not sure if this is why it is there, but seems like a legitimate use.

  From Kyle Brandt

• Consider find -delete -o -true -print. It's not too useful, but it's a pointer that you can think of -true or -false as means to override an in-expression result of some command with side effects.

  From diunko