Only upon crossing the border did they discover their error.

About 40 years later, the Government discovered its error and sent out another surveyor.

"It's been a real pleasure to discover my own error."

"And what did you do when you discovered your error?"

And when Chee discovered his error it was too late.

During this recount, elections officials discovered several errors in the original vote.

The College itself will, when it discovers its error.

He will soon discover his error, and cease to follow us.

By the time they discovered their error, it would be much too late, and there was no way for Riker to warn them.

The aim is to observe people using the product to discover errors and areas of improvement.