I witnessed how a large bank placed large orders at random times. TA just can't predict that the order will be placed now and not in 15 min, 1 hr, 2 hrs, etc. You may watch all intraday TA indicators, yet they can't anticipate the large order that will break all support/resistance, tends, overbought/oversold, etc. Conclusion: TA is worthless. TA is only recommended by brokers who want you to generate lots of commissions from frequent trading.