Hard to prove definitively.
Unfortunately, econometric research can't prove definitively whether Keynes is right.
Right up front, I must say that it is not possible to prove definitively that anything is safe.
That is hard to prove definitively but is a reasonable thesis since VW's post-scandal stance on pay has been to carry on as if nothing had happened.
But he said it remained for Brookhaven scientists to prove definitively that they had seen a state of nearly free quarks and gluons.
To prove definitively the involvement of Neanderthals in cave art creation, scientists will need to find and date samples from more caves using the new technique.
The difficulty, or perhaps for some, the virtue, of talking about the subconscious navigation system is that its existence is almost impossible to prove definitively.
Despite the breadth of the findings, the study, like others before it, did not prove definitively that head injuries sustained on the field caused C.T.E.
For that and other reasons, they say, a negative DNA finding will not prove, definitively, that the bones are not Richard's.
It's hard to prove definitively that this disregard for used goods is what scuppered Schwarzenegger and co's latest round of films (their shaky quality could have been the clincher).
To prove definitively the self-sorting of 1 and 2 at the assembled molecular level, we used fibre X-ray diffraction (fXRD) of the gel phase as shown in Fig. 6.
