Something old, new again
Well, not totally. Teddy Ball also advocated taking the first few pitches that you get in your first AB in order to get a feel for what the pitcher can throw that day, especially if it is the first time you ever face that pitcher. In addition, you give your following batters a chance to see a few more pitches from the pitcher, both in terms of number of pitches, as well as variety, because the more pitches and situations the pitcher has to face in that first inning, the more likely he is to throw all his pitches. He also advocated having an upper cut to your swing to get loft in the balls you hit, because he believed in getting home runs (obviously).