This is a great example of why you shouldn’t put more stock in someone’s argument simply because they claim to have evidence corroborating their argument. What’

This is a great example of why you shouldn’t put more stock in someone’s argument simply because they claim to have evidence corroborating their argument. What’s important is to see the evidence. (See Jasper’s later comment that the described scenario was in fact a very specific example that probably doesn’t extend to many very common simple DOM manipulations and might have relied on a browser-specific optimization that no longer exists.)