Sentence examples for impossible to test whether from inspiring English sources

As it is virtually impossible to test whether or not the tetravalent formula would overcome this potential problem, an element of uncertainty might prevail following the introduction of the vaccines in Asia and/or Latin America where dengue viruses are most prevalent.

There are limits to what we can say from survey data – it is difficult to obtain survey information from the very top of the distribution (for example, it is unlikely that Bill Gates has been included in the US sample we analysed), so it is impossible to test with our data whether this is true at the very top of the income scale.

It is impossible to test each octapeptide for confirming whether it can be cleaved by HIV-1 protease.

Another theory impossible to test concerns motivation.

It's impossible to test all of them".

But this makes claims of efficacy impossible to test objectively.

If it is impossible to test all possible variants, which products should be selected for testing?

It is impossible to test every possible pathway in a computer system.

Thus, it is impossible to test rigorously their suitability.

It is impossible to test all potential environmental perturbations.

Logically, this is impossible to test on Devonian fossils.