But, in practice, there are constantly arising questions which really require some decision of this abstract problem for their solution.

This reduced the alien question to an abstract problem for me and made my situation perfect.

This has always been a purely abstract problem to me, how to get money.

Viewing the matter as an abstract problem, I had forgotten how personal and painful a thing it might be to you.

When you think of it as an abstract problem you came up with the ideal solution.

The Party knows that this is not an abstract problem.

I never thought this would be easy, or pleasant-but in the beginning it was only an abstract problem.

Unless the case concerned themselves, such abstract problems did not interest them.

Clearly, this had gone from a discussion of one man to a more abstract problem.

A very great deal, if you consider it as a study in the abstract problem of learning how to teach robots.