The phrase "are often more complex" is correct and usable in written English.
It can be used when discussing subjects or situations that typically exhibit a higher level of complexity compared to others.
Example: "The issues surrounding climate change are often more complex than they appear at first glance."
Alternatives: "tend to be more intricate" or "frequently exhibit greater complexity".
The usual suspects are shoes that force the toes into short, crowded toe boxes, but the underlying causes are often more complex.
Its subject might still seem raw, but The Agony and the Ecstasy of Steve Jobs is a welcome rebuke to the sanctification of a technological pioneer – and something that points out that reputations are often more complex than they seem.
"You've had the more clerical parts that have already been automated, such as cashiers and so on, but a lot of other areas, such as grocery stores and malls, they're behind manufacturing in terms of introduction of robots, because the tasks performed by people there are often more complex".
"Issues are often more complex than judges and lawyers think, and their legal training gives them no comparative advantage in resolving the complex value judgments and empirical questions that go into deciding questions such as whether same-sex marriage should be legal," the brief said.
In the practice of science things are often more complex.
Decisions involved in process synthesis are often more complex than those involved in other disciplines.
Reality is often more complex.
And yes, the geopolitical context outside Europe is often more complex and violent.
For other cases, the treatment is often more complex and awaits further research.
But discussions with people who have used these services suggest social justice is often more complex than the professional perception.
But at C. W. Post, Mr. Bergman pointed out that the scholarship issue was often more complex than it might first seem.
