If the monitor finds a 'worthless' tile in the bag, the health care worker is not compensated.
Even the most sophisticated statistical analyses are worthless if the relationship between data and conclusions is improperly understood.
Unless the test is totally worthless, coverage is not an effective way of controlling such tests.
An intermediate-goods producer who thinks that banks' bills of exchange in gold are worthless does not accept them in payment, and produces nothing.
To treat them as worthless is to lose information that might be useful.
In other words: competition is either an ineffective means to a valuable end or an effective means to a worthless end - iconoclastic indeed.
By lunchtime on the following day, everything - including its abject side, the expulsion of the worthless, consumed commodity - has disappeared from view.
A sample without accurate locality data is largely worthless and it sets a bad example for collectors to include photographs of material without proper data.
