Combination of TA,Fundamental and historycal of price will help us to predict where BTC will going next. Without TA we can not determine support and resistance. All trader and investor is always see the charting to determine trend of market before buy or sell, without charting and TA is difficult to decide when should be buy and sell. Knowledge of TA is the basic of trading activity, and we should be have knowledge about it before jumping in to trading/investing, we need knowledge of TA to invest in markets of crypto, stocks, comodities, forex etc.