[dageshi]

People have said this about every media since the book was invented.

[Minor49er]

Is it wrong, though? If you spend all day doing nothing but reading books, you're not using the time to apply anything that you have read in a book

[vidanay]

That's how I feel about programming books.

[josinalvo]

Did someone measure it and proved them wrong?

I am not saying you are wrong, or he is, but the ancientness of the claim is not an argument in favor or against it