the leftmost redex first, the term reduces to the normal form `I` in
one step. But if we reduce the left most redex instead (namely,
`(ωω)`), we do not arrive at a normal form, and are in danger of
the leftmost redex first, the term reduces to the normal form `I` in
one step. But if we reduce the left most redex instead (namely,
`(ωω)`), we do not arrive at a normal form, and are in danger of