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Turning Kaley Cuoco Into a “Goofy blonde who says foolish things” Was a Mistake: Chuck Lorre Talks About the Big Bang Theory
The Big Bang Theory creator Chuck Lorre admitted undermining the true potential of Kaley Cuoco's Penny earlier in the series.
The Big Bang Theory Co-Creator Blasts One Character’s Early Appearances
On The Official Big Bang Theory Podcast, Chuck Lorre said that Kaley Cuoco's Penny wasn't fully developed in the earlier seasons of the show.