I’ve noticed that many new investors often get confused about Expert Advisor—often abbreviated as EA—on the MT4 platform. There’s a lot of technical jargon, which makes many people hesitant to get involved. But the truth is, EA isn’t as complicated as you might think.

Let’s understand simply what an Expert Advisor really is. In short, an Expert Advisor is a computer program that helps us with investing. It can do almost everything for us, from analyzing data to placing buy and sell orders, as well as managing profits and losses—without us having to sit and watch the screen all the time.

Each expert advisor is an automated system. It’s built from a set of well-designed instructions so it can read statistical data and make decisions extremely quickly, with highly accurate detection of market signals that humans can’t do. What’s more, when AI is added, the EA becomes even smarter.

There are many good things about EA. First, you don’t have to keep watching the order board yourself. Products on MT4, such as FOREX, can run trading for up to 20 hours per day. Watching it yourself would be exhausting and may lead to incorrect analysis, but an EA works all the time without getting tired.

Second, the massive amount of data that keeps flowing in endlessly is filtered by the EA. It keeps only the information that’s relevant to its strategy. And the EA’s decisions use statistical information, not emotions, which means the decisions are more stable than those of humans who may make choices out of fear or hope.

Third, an expert advisor is a system with a strong Cut Loss feature. It protects us from major losses effectively. When the price approaches the loss level we set, the EA issues a closing order immediately, so we lose as little as possible. And when the price rises to the profit target, the EA will also place an order to lock in profits for us.

But EA also has limitations you need to know. First, an EA written for trading FOREX can’t be used to trade gold or oil. Each asset needs its own EA.

Second, an EA only follows the rules it was set with. If you configure it to close a position when profit reaches 6%, it will close right away—even if the market keeps rising—so sometimes you might miss out on even larger gains.

Third, an expert advisor is a tool, not a guarantee. It doesn’t guarantee that you won’t lose money or “wipe out your account.” If the EA reads data incorrectly, or if the market moves abnormally, it could still cause us to lose all our money.

Based on my experience, I recommend doing both at the same time: use EA to generate income and manage risk, but at the same time, trade yourself to build your own experience. What EA still can’t do well is extending profits when it sees an opportunity—it gets stuck to the rules it’s set to follow. But we humans have instincts and flexibility that an EA doesn’t have. If you use an expert advisor as one part of your strategy and trade yourself as another part, you can definitely benefit from both approaches.