Problems

They tackle problems with the end in mind.

For example, Facebook has had some problems with privacy settings.

There's also a clear link between cat ownership and a lowered risk of strokes or heart problems, as a cat's purr lowers blood pressure.

It is now plagued with the familiar urban problems of pollution, traffic congestion, and overpopulation.

Measures have been taken, however, to ameliorate those problems.

Twitter's early days were not without their problems.

Doughnuts can cause health problems if they are eaten too often.

One of these problems is that doughnuts contain a large amount of fat.

Archimedes loved to solve problems and think about math.