One of the people who've been proven most accurate in their theories of this apparently now basic fundamental aspect of quantum physics is this guy....
"Werner Heisenberg, among others, interpreted the mathematics to mean that reality doesn't exist until observed.
"The idea of an objective real world whose smallest parts exist objectively in the same sense as stones or trees exist, independently of whether or not we observe them ... is impossible," he wrote.
John Wheeler, too, used a variant of the double-slit experiment to argue that "no elementary quantum phenomenon is a phenomenon until it is a registered (observed,' indelibly recorded') phenomenon."
Last May, Henry Stapp and colleagues argued, in this forum, that the double-slit experiment and its modern variants provide evidence that "a conscious observer may be indispensable" to make sense of the quantum realm and that a transpersonal mind underlies the material world."
That article goes on to give caveats to the above understanding.... which this new experiment appears to knock down.
What Stapp argues is what physicist Michio Kaku concludes at the end of the brief link at #1.... that the material particles of which we and our physical world are made appear not to exist unless there is an observer, and even then, two observers might see different things.
And the "transpersonal mind" Stapp mentions is where physics and psychology seem to meet, again, apparently in some cosmic fashion.... that is, it seems we would not exist without this interaction.
Possible Role of Quantum Physics in Transpersonal & Metaphysical Psychology
The quotes about "a variant of the double-slit experiment" has absolutely nothing to do with the showering habits of A. Mackris and the Artist Formerly Known as Bill O'Reilly. Just want to make that clear.