Hello All - I'm new to backtesting. Is it best to backtest my strategies including any indicators or price action strategy I may use on a RANDOM stock I've never traded before. This way, I'm assuming, I won't have any bias on it's direction?? For example, if I've always traded AAPL, I might already know it's bullish direction for the year. Also what is the advantage of multi-time frame back-testing and should I focus on smaller time frames and look primarily at 1hour or less bars so that I actually see more movement in the day to actually test my strategies?? Thanks in advance.