This was after it became clear to him and colleagues that the decision for the omission was a deliberate one and that information on the board's plans for its district hospitals would be published subsequently.

BBC: Health and Social Care Committee

He said flights could only resume when the incident was confirmed to be "an omission rather than a deliberate threat".

BBC: Guernsey Airport closed after open door on plane

Not only must there usually be an agreement between two or more parties, but there is also an additional requirement that a sufficiency of evidence exists to establish, on balance, that the act or omission complained of was deliberate and not merely negligent or inadvertent.

BBC: How has collusion been defined?

The omission from the application may be deliberate, to hide a health condition that might have made the applicant ineligible for insurance.

NPR: Insurers Revoke Policies To Avoid Paying High Costs

Currently, almost any accounting system you can think of records mistakes of commission, when a deliberate act goes wrong, but keeps no record of mistakes of omission: things not done that should have been.

ECONOMIST: In praise of the ideas of Russ Ackoff