It would be a bad design to couple two things that change for different reasons at different times.

Testing a design is also important, because bad design can come from good intentions.

Had he had any bad design, his way would have been upwards.

It would be bad design to let someone go out in such a harsh environment without a way to contact their base.

It can't be a programming error or bad design.

Then, when the early ships exploded due to bad design, space travel lost its support.

The worst design was Christina's, and so she was cut.

In many cases this could be considered a bad design.

The old pavement lane was a good example of bad design.

In some cases, however, the problem is genuinely bad design.