[thaumasiotes]

In certain branches of mathematics, it is routine to work with very long inequality chains. For example:

a < b <= c < d <= f <= g < h

You would then conclude that a < h holds.

I haven't looked at the article, but based on the comments it sounds like the author has this kind of thing in mind. I got the vibe that he was arguing that you shouldn't mix < with >, not that he was arguing that comparisons should only ever be made low-to-high.