According to the BBC, ten million of you watched the Dr Who special marking the 50th year of time travelling mayhem and alien invasions of Earth. I strongly suspect far fewer of you are going to be reading this, but who knows, perhaps one day this blog will survive the ravages of time and become an indispensible guide to how life in Swindon really was before Professor Cox was proved right.
I do note however one aspect of Day Of The Doctor that most people might not have noticed. The good Doctor turns out to have been an utter cad. He sent Rose Tyler into exile in another dimension so he could snog Elizabeth 1st. Perhaps worse than that, children have learned that our foremost warrior queen married a nine hundred year old alien with really bad fashion sense. No wonder she kept that secret.
A little while ago I spotted a news item on Yahoo in which Professor Brian Cox was quoted as saying that time travel was possible. I disagree with him vehemently and posted a somewhat sarky comment to that effect. You see, he says that einsteinian time dilation due to excessive speed allows a traveller to go into the future. I say it doesn't, because the traveller hasn't left his own present and cannot move independently of his own local time, thus he isn't time travelling at all. Physics is really easy when you don't listen to physics lecturers.
Lo and behold within days a lecture by Professor Cox was aired on television in which he discussed whether time travel was possible. Actually he spent most of the lecture dazzling his audience with the inner mysteries of light cones, and only at the very end suggested a possible time travel paradigm. He said that if you could warp space so that the end met the beginning, then hurtling through space at near-light speed would get you into the past.
He is of course wrong. If he was right, all it wouldl do is get you ten penalty points on your license and a three month ban on driving time machines. Not only are there speed cameras everywhere,to catch you flashing past at 186,000 miles per second, your arrival at your destination will very likely be in the history books and therefore you're guilty as charged. According to the history books I've read, no-one from the future ever turned up.
He did confess that the energy required to warp space like that would be enormous but tried to inspire the television audience to try anyway. Clearly he hasn't dealt with energy companies. If he had, he would know that no-one in Britain could afford to power their time machine.
Survival Without Central Heating Update
Cold... So cold...
Time Machine Of The Week
So you want to follow the good professors advice and build a time machine? Well, you don't need to build a weird victorian chair with rotating umbrella, a 60's police box, or a huge underground complex in the American desert. Just follow my simple instructions and you can travel through time.
Step 1 - Sit comfortably.
Step 2 - Wait. Twiddle thumbs if necessary.
Step 3 - Done. Finished. You have just travelled through time according to Professor Cox. Admittedly you won't be able to snog Elizabeth 1st, battle Daleks, or act the idiot with a sonic screwdriver, but there you go.
You see, in order to travel into the past or future then the past or future has exist in order to visit it. That means that Time must be dimensional, which unfortunately for Professor Cox means the past is already defined, and since the future is merely a part of the Time dimension we haven't reached yet, it too is pre-determined , which means there's nothing you can do. The bank will foreclose on your mortgage, Schrodingers Cat will die of starvation, and the number 10 bus will squash your dog. There's nothing you can do because Time is already defined.
As for me, I say time travel cannot possibly happen because there isn't any Time, only Now. A single existentent moment that changes on a quantum level incredibly fast like a stop-frame movie with a frame rate of billions upon trillions upon quadrillions of frames a second, varying locally according to such einsteinian things like speed and gravity. All the atoms that made Julius Caesar still exist, albeit seperated and changed. A vibrating universe that has no past or future, merely a present that experiences Change. Time is therefore not a seperate existence, dimension, or place you can visit, just our experience of Change.
Sadly I can't compete with Professor Cox when it comes to inviting celebrity audiences to a television physics lecture, but I've taken your advice Brian. I've made a start. Trouble is, my time machine cannot possibly work.