I don't think Titchmarsh had fully thought that statement through. Would the concept "irrational" be interesting if it didn't have a practical use? To illustra

I don't think Titchmarsh had fully thought that statement through. Would the concept "irrational" be interesting if it didn't have a practical use? To illustrate: Pi, 6, and 86 are three elements of the dwwoelfel set. I think that even the most curious mathematician could tolerate not knowing that fact.