NO MULTIVERSE, NO PLATONISM (Less Air Travel, Too):
Some people go around, and brandish the “Multiverse”. Of course, the “Multiverse” exists, in one’s brain. The brain, among other things, extends all over imagination. Out there, among the galaxies, in the real world, there is no reason to suppose there is a “Multiverse, whatsoever.
It is basically something to sell books with. Or, just as with evil minded religions, for some physicists to claim they are like gods and can believe in something really absurd, and grotesquely self-contradictory:
There is No Universe, But the Universe:
The Universe is all there is. By definition. By philosophical definition. Just by philosophical definition? Not so. Any logic is associated to a universe. If the “logic” is nature itself (“all of the logic”) the associated universe (in the Logic sense), is, well, the Universe.
If something some would want to call the “Multiverse”, whatever that would be, existed, it would be part of the Universe.
Age Of The Universe? Really?
Befuddled physicists go around, telling us about the “First Three Minutes” (Weinberg; Electro-Weak Nobel laureate), or the “History Of Time” (Hawking; remarkable survivor-physicist in a wheelchair).
That rests on their perfect knowledge of how the universe evolved.
This, in turn, depends upon ignoring Dark Energy. Dark Energy shows up as an unpredicted acceleration of the expansion of the Universe.
The old theory of expansion of the Universe was established before Dark Energy was discovered.
So they think they know, but I know they don’t really know.
I don’t know if the Universe has an age. But it is aging, or, at least, let’s be more cautious, the Universe is changing.
How Both Physics And Mathematics Became Not Even Wrong:
Mathematics themselves have always been developed in particular directions, in light of what it was felt was needed to understand the physical world. That was certainly true with Buridan, and his students, who developed computational methods, and graphs, to handle what they wanted to do with inertia. That was true with calculus developed for all sorts of engineering and physics explanations.
And so on through the next three centuries. However, in the last three decades, what I personally viewed as extremely erroneous notions in physics became dominant.
Indeed, it had become that clear time was not “relative” (whatever that is supposed to mean). True, time was local, as per Relativity, but it was local in an absolute way. The absoluteness comes from Quantum Theory… And the absoluteness of curvature in cosmology (the focusing of light, by galaxies and galactic clusters is absolute, thus so is time, locally around such focusing objects!).
Efforts were launched towards was felt would be the mathematics of “superstrings” and “field theory”. That would have been wonderful, if the initial meta-axiom motivating the whole enterprise, that nature worked with strings, super, and field mathematics perched on field math, all the way down… had been, roughly, correct.
Mathematics is not “natural”. Or let’s say, not anymore “natural” than the human brain can get contrived. Mathematics is an adventure in what the geometry, the Quantum geometry, of neurology is capable of.
Mathematics is not unreasonably effective (as the famous physicist-mathematician Wigner put it).
Mathematics is reason, manipulated to be effective in a particular way. Correctly determining in advance what the way will be makes the difference between understanding nature, and failing to do so.
Math is just, roughly, neuronal geometry that “works” (“working” here meaning what the brain does, whatever it is, beyond just manipulating electric and chemical signals).
Do We Need To Tour Frantically With Jets?
In other news, after the crash in France of a Lufthansa A320 plane, pundits will surely come, and claim aloud that air travel is the safest mode of travel.
Is it? It depends upon the method of measurement.
The way advertisers come up with the “air travel is the safest form of travel” statement is by dividing number of people killed by distance travelled.
However, another measure would be to divide the number of people killed by the number of travels they engaged in. This is a more significant measure to think about. And air travel looks much good that way: in just one day in Europe, more car travels happen than all the air travel for the entire world, in a year.
Not to say that air travel should be discouraged. It is not exactly like smoking, with no redeeming value, whatsoever. Families ought to be reunited. Getting to know other countries, encouraged. However one week tourism, far away, thanks to plane travel ought, in my opinion, to be discouraged.
Instead, the projections are that air travel will augment considerably in the next few decades.
Between Barcelona and Dusseldorf, one ought to be able to travel just as fast by rail (not all the high speed lines are built, nor will they be built, thanks to plutocratically imposed austerity, and subsidies to… air travel). Electric trains pollute much less, by more than an order of magnitude, and are much safer.
The global CO2 situation is that bad. Besides, look at that entire high school classroom of fifteen year old that went down with the plane… Just for a week in Barcelona?