A lot of traders are happy that their charting strategy is proven and delivering profits. They don’t want to cloud their market view by having their own bias about what the fundamentals might say. In fact, they think that their opinion will be fairly insignificant in the wider scheme of everyone else's buying and selling decisions. But we all know that certain major economic announcements often bring additional volatility in the markets, even if it's for just a short period of time.
Even the neatest chart pattern can temporarily be thrown out of sync by a significant announcement, such as the latest unemployment news, or what a country’s central bank thinks it may have to do in the future regarding interest rates.
Paying attention to when these announcements are due can mean you don’t end up placing a carefully planned trade a few minutes before something happens that could instantly trigger your stop loss. It’s often far more sensible to wait for the dust to settle after such news events have taken place, and then see if the reason for the trade is still valid.