And don't renew your manager's contract before he's shown whether he can handle the job.
It will still be shown, whether or not McCoy takes part.
But it remains to be shown whether a nutrient supplement can delay or prevent the onset of dementia.
Radiologists say a decent M.R.I. scan should have clearly shown whether the cartilage in Ms. Kislevitz, a meniscus, was torn.
Those, of course, are a couple of big ifs -- no studies have shown whether any fish could create the Trojan gene effect in the real world.
Studies have not yet shown whether accidents have increased since the signs went up, but Mr. Markowitz doesn't think they are dangerous.
Now, the market has cooled, and the air has come out of many of the stocks long before their results have shown whether or not last year's optimism was justified.
Birds have died of the flu in Turkey, leading the European Union to ban the importing of Turkish poultry products, but tests have not shown whether it is the H5N1 strain.
Apple's iPhone 5S fingerprint sensor was spoofed within days of its release by Germany's Chaos Computer Club – though nobody has yet shown whether fingerprint data can be extracted from the phone.
But initial translations of the Arabic documents found at the site have not yet shown whether the tests recorded in the films involved biological, chemical or nuclear weapons, or who the men in the filmstrips were.
It is yet to be shown whether the phone companies will see a return on these investments, but simply by trying they will make the competition harder for both the satellite and cable systems.
