The human brain is an incredibly complex organ.
The math problem was too complex for me to solve quickly.
The relationship between poverty and education is complex.
My rate depends on the complexity and timeline of the project.
This issue cannot be seen in black and white - it is complex.
I am breaking down this complex process into three simple steps.
If we remove the complexity, it is simply a matter of supply and demand.
I would like to add something, because the full picture is more complex.
I want to be careful with my choice of words because this is a complex matter.
An alternative perspective is that the situation is actually a bit more complex.
On the surface it seems simple, but the complexity becomes clear when you dig deeper.
If the project complexity increases, the budget will need to be adjusted accordingly.
Using charts and graphs when presenting complex data makes the topic easier to understand.