People hear "virtual particle" and have no clue what that means and associate it with other "virtual" things. Or, more directly connected to the title of this story, hear that matter is "merely" "vacuum fluctuations", which, thanks in no small part to Star Trek, we think has connotations of instability or transientness.
No. Matter is matter. Matter is stable on a cosmological scale, and no amount of fiddling with English words shall add or remove one iota of stability. Matter may consist of vacuum fluctuations (where you probably know neither what is meant by vacuum nor what is meant by fluctuations), matter may consist of the infinite love of fuzzy puppies, matter may be divine farting, but matter is matter, it is what it is, and there is nothing more or less "real" about it today than there was yesterday.
I hate the pattern of:
1. In your ignorance, define X as Y. (Example: "My soul is a material thing that houses my consciousness and leaves my body when I die.")
2. Find out Y isn't real. ("We have weighed the body between life and death, and the mass is the same. Y does not exist.")
3. Declare that X isn't real. Usually with a whole lot of "aHA! Got you!" thrown in for good measure. ("Therefore, nothing like the soul exists and you religious people are morons for believing in anything supernatural!" If you can't see the logical flaw in that argument, look harder...)
We get this pattern in crappy articles about QM all the time. Consciousness too.
Note: I'm not saying I believe the definition or that it is complete, and I'm certainly not going to defend it, but maybe worth thinking about.
...nope, doesn't work for me.
Oh god. This is what I get for reading new scientist...