Good evening and thank you for joining me for another boring books for bedtime.

I hope tonight's selection provides all the boredom your busy brain needs to quiet down and let you

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Find a comfortable spot.

Adjust your volume.

Take a nice deep breath in.

Let it out slowly. and off we go. Several of you have written in to request more of this evening's work and I'm happy to oblige. So tonight we're returning to a satirical mathematical

book, Flatland, a romance of many dimensions by Edwin A Abbott, with illustrations by the author, A Square.nd Edition published in 1884.

Let's pick up where we left off.

Section 6 of Recognition by Sight

I am about to appear very inconsistent.

In previous sections I have said that all figures in Flatland present the

appearance of a straight line and it was added or implied, that it is consequently impossible to distinguish by the

visual organ between individuals of different classes.

Yet now I am about to explain to my spacecraft critics how we are able to recognize one

another by the sense of sight. If, however, the reader will take the trouble

...