diallelus noun. (Latin < Greek di allelon "through or by means of one another")
1. In logic, a circle in proof; an attempt to prove one proposition by another
which is itself proved only by the first.
2. Also known as Infinite Regress, a problem in epistemology and, in general,
a problem in any situation where a statement has to be justified. According to this argument,
any proposition requires a justification. However, any justification itself requires support.
This means that any proposition whatsoever can be endlessly (infinitely) questioned.
© Adam Beaumont 2015