1.   Economic systems and the concepts used in economics can seem as complicated as political systems and the concepts used in political science.

2.   Indeed, the cross-equation restrictions May become so complicated as to make computation of the restricted model difficult or impossible in practice.

3.   Coordinating airline traffic on the ground is as complicated as managing the traffic in the air.

4.   And keeping check on who was doing what, and when, and where, could well have proved as complicated as calling the roll after Dunkirk.

5.   And as the questions grew more complicated as the baby boomers were raising their own kids, Spock revised and updated.

6.   As they make the trek, they discover that the heist will end up being as complicated as the war itself.

7.   A. Flowering plants are pretty clever, but how they decide exactly when to open their flowers is about as complicated as building a watch.

8.   But even that can be as complicated as making a souffle.

9.   But many such waivers are at least as complicated as the rules themselves.

10.   But proving beyond a reasonable doubt that the first batch of executives had committed perjury was as complicated as any cancer study.