It is the indicator. Threefold . 3 different indicators are used:
1) The indicator with the period 2
2) The indicator with the period 7
3) The indicator with the period 14
If at the same time RSI-2 < 10 and RSI-7 < 20 and RSI-14 < 30 = a bottom
If at the same time RSI-2 > 90 and RSI-7 > 80 and RSI-14 > 70 = a top
Parameter accuracy influences.
Strategy allows to measure indicator accuracy. To check whether this indicator is suitable for this pair and a timeframe, how exact.