This is a very interesting topic, and there are several ways to square the circle. I have a friend who is a pro trader, managing a Forex business on behalf of a couple of hedge funds and private clients. His set up is based in Wall Street using the same servers as Goldman Sachs uses. They are expensive, but that’s his trading edge - to be at the front of the queue for any market order execution.
He tells me he has designed six different algorithm strategies for specific market conditions, which is both flexible and based on specific rules per strategy.
Which is what Carlos explained. In other words, if you’re following a profitable strategy, keep to your rules while it remains profitable, but be ready to change your strategy if market conditions also change.
Today’s market climate produces conditions that are very volatile and price action follows market sentiment from pillar to post - because the global economies are far from stable, especially as the USA is in disputed Presidential transit, UK and Europe are in unresolved Brexit negotiations, and Covid 19 is causing economic ruin from untold deaths, job losses, and business failures.
It has tested my bulletproof trending system, and being flexible in responding to change, I have upped my intraday trading window to the slower 4hr chart, instead of 1 hr. Maybe, I’ll also have to design a contrarian strategy as well.