at resolves the problem.  The ensuing activities share
| a common form, the differentiation of a pattern.  In our consternation, we recognize a variety
| of features, some of which can be varied as part of our capacity for free choice.  The problem
| or surprise is present because of its difference from something.  As a surprise, what happens
| is different from what we habitually expect.  As a problem, what happens is different from
| what we hopefully intend.  To change the systematic expectation against 