The phrase "all it demonstrated" is correct and usable in written English.
You can use it when referring to the results or findings of a particular action, event, or study, indicating what was shown or proven.
Example: "The experiment was not as conclusive as we hoped; all it demonstrated was the need for further research."
Alternatives: "all it showed" or "all it proved".
Above all it demonstrated, he says, a certain kind of unease – perhaps even envy – at the Vice philosophy of what he calls "immersive" journalism.
This was a reflection of Scargill's own political philosophy and also how the miners accurately perceived what was at stake; above all, it demonstrated the absolute determination of the Thatcher government to defeat the miners, destroy the NUM in the process, and thereby inflict an historic defeat on the labour movement from which it could not recover.
First of all, it demonstrated that the Ge/Si 001) film formed in the conditions of a closed system consists of the usual patched wetting layer (WL) and large droplike clusters of Ge rather than huts or domes which appear when a film is deposited in a flux of Ge atoms arriving on its surface.
This is an important finding because, first of all, it demonstrated that the conceptually simpler and computationally more efficient approach of a direct scaling of count matrices led to data sets with an unclear biological interpretation.
First of all it demonstrates that former t-test related acceptance criteria can be scaled by a factor of 1.15, which allows for a broader tolerance without a loss of decision certainty.
This 1 minute 17 second video is my all time favorite ad because it's astonishing, funny, highly buzzworthy (72.9 million YouTube views to date and counting), and most important of all, it demonstrates better than any demo I could possibly imagine, the incredible precision of driving Volvo trucks.
Above all, it demonstrates the political desire of certain Union governments to submerge the question of social standards in the WTO.
Most of all, though, it demonstrated Jeffery's Deitch's unique connection with our city.
Or, as Mr. Hewitt's work suggests, we see it demonstrated all the time without knowing what we're looking at.
And with "Glossary" and all that preceded it, it demonstrated that it really doesn't know how to put on a concert.
Experimental results have shown that, compared with other power management methods examined in this paper, AADPM achieved the highest energy saving in all cases and it demonstrated strong adaptability to network congestion.
