The failure to execute a single principle may render the others less effective.
The others may be rendered less effective due to the failure to execute a single principle.
The others have no reason to look back at the single.
There were no random drug tests done.
This isn't the decisive distinction.
the market is empty
Evolution has been thoroughly examined and explained.
Bean and Land's End were out of stock by Christmas Day, which saved them having to mark it down.
I can see that it's reasonable to keep secrets sometimes.