When using Technical Analysis, does the REASON for price action matter?

If price is moved, by a considerable amount, because of unexpected news, reports, etc, is technical analysis still valid? I’ve always felt that TA is primarily a self-fulfilling prophesy, and should therefore not work if influenced by news, reports, politics or unexpected changes in fundamentals. Am I wrong about this? Thanks

Go read “Master The Markets” by Tom Williams, that will answer your question and more.