Almost all can be explained by some type of unintentional scribal mistake, such as poor eyesight.

But some officials have said that in tightening the rules, the government may have made unintentional mistakes.

As far as you can tell, was this a snub or an unintentional mistake in protocol?

In most cases, a recall results from an unintentional mistake by the company, rather than from an intentional disregard for the law.

Accounting irregularities are commonly distinguished from unintentional mistakes or errors.

All mistakes, intentional or unintentional, should be laid upon my doorstep.

The biggest problem you might have is not intentional tampering, but unintentional mistakes.

But that's all it was, a completely unintentional mistake.

It included retakes of a few scenes, where the singers made unintentional mistakes.

But I think it was an unintentional mistake.