Pro's Close the Market, Rookies open it???

I've heard this saying many times over, The 1st hour of trading is for the rookies and the last for the pros.

Any comments or thoughts on the validity of that statement?

I find that hard to believe when I see the intraday chart of Goog today...

Looks like the rookies had it right the 1st hour and the pros on heavier volume moved it up 5+ points right before it tanked after hours. Perhaps I'm missing something

 

Part of the reason the last hour goes against the trend is because day traders need to take profits.

 

Pookies open it