A general expression implies nothing certain.

Explanation

Broad, sweeping language carries no definite obligation and confers no specific right; certainty requires particularity, and generality is the enemy of precision.

Where this applies

• They're relying on vague general language to create specific rights that aren't there.
• A broad, sweeping statement carries no definite obligation.
• Generality is the enemy of precision — vague language creates no certain rights.