It is near impossible to absolutely prove who killed Mohamed Reda, Mahmoud Abdel Hakeem, and Abdel Ghany Mahmoud or any of the other students shot since November.
First, in our study no measurements of serum levels of parathyroid hormone and Vitamin D are available for most of the population, so it is impossible to absolutely exclude confounding factors such as primary hyperparathyroidism and secondary hyperparathyroidism due to vitamin D deficiency.
I suppose that one could make the philosophical argument that in evolution it is impossible to absolutely prove anything, but the evidence for WGD is so strong that I think that any reasonable scientist would consider it proven at this stage.
"America is a big country, and it's impossible to have absolutely complete coverage," he said.
And while it is impossible to be absolutely sure, one came away with the firm impression, reinforced by dozens of eyewitnesses, that the soldiers, men of the 1st Battalion, The Parachute Regiment, flown in specially from Belfast, may have fired needlessly into the huge crowd.
You might argue that it is impossible to be absolutely, positively certain about anything at this point, and I would probably agree with you.
"I think the [scientific] community is gradually realizing that it might be impossible to be absolutely certain, based on its atmosphere, that an exoplanet hosts life".
This means that modern CTOs should perform their functions under the conditions when it is impossible to have absolutely all the necessary data, facts, factors, scenarios, etc. for the "right" decision.
"He talked about that's going to prove really challenging - I would go further and say it's actually going to be impossible to protect, absolutely protect the front line.
Viewer numbers and ad impressions are impossible to quantify absolutely, but it appears to me that each show is getting downloaded through verifiable channels between 150 and 200 thousand times.
Criminologist Prof David Wilson of Birmingham City University, who once worked on the sex offender treatment programme at Grendon prison, says psychological profiling can indicate whether such a criminal is less likely to re-offend - but ultimately, the nature of the offence makes it impossible to be absolutely certain.
