..and another thing

People don't read individual letters in words; they recognise the shapes of the words -  defined by the tops of the letters.

If you don't believe it, take a sentence in any newspaper or book and cover the bottom half of the words.

You can still read the words with relative ease.

Now, cover the top of a different sentence. You will find that words are harder to read because there is not much difference in the shape or line of the bottom of the words.

You can now see why a knowledge of typography can be important (for more than the obvious reasons) to graphoic designers and copywriters!