User blog comment:Vel!/Omega and power towers/@comment-5529393-20130418175057/@comment-5150073-20130418184812

We can replace w not only by other ordinal, but also by number, or even, surprisingly, by any symbol or item since we can do all normal operations on it. For example, we have meter^2, meter^3, we can perform all operations on "meter", so why we can't have meter^meter, meter^^meter, meter^^^...^^^meter (meter ^'s)?