My nieces are 2 and 4 so I get to read the books and surprisingly often the books are awfully written with zero educational value. So the authors' sentiments do

My nieces are 2 and 4 so I get to read the books and surprisingly often the books are awfully written with zero educational value. So the authors' sentiments don't really surprise me; if you don't bother with the quality of your craft, why should you bother with the scientific underpinnings of teaching/learning.