I must tell you that the evidence to support pheromonal vectoring in our species is flimsy to say the least.
Should you insist on investigating though – and I’m guessing that perhaps you might – then you can procure several spray-on products on the open market which are sold for the very purposes which you envisage.
You should firmly bear in mind that these items do not contain human pheromones – they are based on veterinary products – which have indeed been found to be somewhat effective for use in the animal husbandry industry. Especially piggeries.
So, if you do feel inclined to experiment, then I most strongly recommend that you avoid wandering into the vicinity of any farmyards.
Unless of course [ ███████ ] [ ███████ ] [ ███████ ] [ ███████ ].
Yes, I’m not overly fond of conjecting about subjects which cannot, and will not, ever be proved one way or another. In this instance though I shall make a exception, given the intriguing nature of your query.
You are quite right to say that there were a great many bird-like dinosaurs, as is being demonstrated time and time again by fossil finds. So it is interesting to wonder whether perhaps they ‘sang’ – as birds are wont. If they did – and I see absolutely no reason why not – we can reliably surmise the following :
It would have been loud
It would have been low-pitched
And probably with a slow(ish) tempo.
Whether they may have had a musical bent – as many birds do – that humans might have found pleasing ( had they been around at the time – which, of course, they were not ) I cannot say. Though I very much like to think so.
As an aside, I can suggest a jocose method for stimulating your imagination regarding what it may possibly have sounded like.
Furnish yourself with an old vinyl record deck and procure one of the many available long-playing records of birdsong. Turn up the volume to maximum, place the needle on the record, but do not press play – just wind the disc around by hand as slowly as you can manage.
Yes, it is true that it pays to be somewhat vigilant of possible detrimental health effects when consuming shellfish.
I can offer some advice ( applicable to edible bivalves ).
If the shell is open before you cook it – throw it away.
If the shell is not open after you have cooked it – throw it away.
Enjoy the remainder with dill, apricot, or even a Belgian Weissbeer sauce.
You were wondering “ Where is the evidence that Humans have evolved mentally over the last million years or so ? ”
I expect that you are aware that there is a great deal of heated and vexed controversy on the matter . . . so, bearing that in mind, I would say that your own opinion is very probably just as valid as any expressed in the body of scientific work on the subject !
Therefore can I perhaps encourage you to conduct your own informal research ? Your letter’s postmark hints at your geographical location, thus, can I recommend that for a starting place as good as any, why not try the centre of Cardiff on a Friday or Saturday night ?
“ Where would be the best place to locate my business so as to be safe from a future mega-tsunami ? ” you asked.
The glib answer would of course be ‘ in a very high place a long way away from the sea.’ So, if for example, you were to setup shop on the plateau of Tibet, it is unlikely ( though not impossible ) that you would ever be bothered by tsunamis.
There is however another possibility – and curiously, it’s at sea level . . . Counter-intuitive though it may appear, the middle of a large ocean can be a reasonably safe place to be with respect to tsunamis. The reason has to do with the ‘wavelength’ of a typical tsunami wave. The wave may indeed be fiercely high – maybe as much as 10 mtrs – but, the principal question you need to ask yourself is – how long would it take to pass by ?
Far out at sea, seismologically generated waves, though fast moving, often have a wavelength of several hundreds of Kilometers – so, if you were floating in the middle of a deep ocean, it’s probable that you would scarcely notice its passing . . .
Thus, a large-scale oceanic floating platform may suit your needs ? ( I’m informed that there are tax advantages too ! )
[ Eiron. You’re forgetting perhaps about the so-called oceanic ‘rogue waves’ – which are believed to account for many lost shipping accidents every year. Ed. ]
You enquired “ Why is it so difficult to visualise things in four dimensions ? “
It is not.
Just look up at the night sky, and you will see the heavens laid out in 4D right before your eyes. Most of the stars – indeed galaxies – which you will observe are depicted not as they are, but as they were billions of years ago. In other words, you are viewing them in the three Cartesian dimensions of space, plus the fourth, of time . . .
What is so difficult about that ?
I think that I need to re-orient you regarding your question “ Is there a scientific way to keep my teeth white ? “
I would strongly discourage you from the oral use of any bleaching agents. I believe that the long-term consequences are, at best, unknown.
How much better if the teeth could be whitened outside of the mouth ? To this end, it is possible to replace all ones teeth with ceramic devices – which individually screw into screw threads implanted in the jaw bones.
Farfetched as it may sound, a colleague has just such a set, which he had manufactured and installed in Malaysia some thirty years ago. They are as white as pearls.
Not only that, but if a tooth breaks or cracks – as they occasionally do, a new one can be made in a couple of days. He also has what he calls his ‘decorative’ sets, for psychological impact etc. One is fetchingly crafted out of solid titanium, the other has two extra-long (2.5cm ) incisors – which he principally uses for business meetings.
I quite agree with you – swinging one’s arms whilst walking or running is a prodigious waste of energy. And is something that we should all urgently pay attention to.
It quite perplexes me the way that, in the eyes of the public, it is quite normal and acceptable not wave one’s arms about while riding a bicycle – so why do it when running ?
I have not conducted any experiments into the amount of energy wasted in arm-swinging, but I would guess that in the case of, say, a sprint runner, ( such as yourself ), the cost of arm-swinging could well be 10 – 20% of the total energy expenditure. It is obvious to me that competition runners should train themselves not to swing their arms.