Clearly, I’ve survived. Only, though, because I was sent again. I arrived on this version of Earth a few days ago, but I was so weak, it's taken me until now to get up enough strength to type again. I think I must have been very close to death when William found me and took me into his home, but I can’t really remember much about what happened then.

I certainly fell on my feet (metaphorically - I was in fact flat on my back) when I was found by William. He and Sarah his wife have cared for me as if I were their own. A few days rest, and some simple home-made food, and now I feel a lot better.

I can't tell you much about this world, as I haven't been allowed to get up yet, so I haven’t seen much outside this room in their cottage. It seems pretty basic - they have electricity, but no television or radio (or none that I have seen or heard) and not many other appliances either - in fact if it wasn't for the lights, I’m not sure I would have known they even had electricity.

The house is very simply furnished, but clean, and neat. My hosts too are simply dressed - mainly in black, although Sarah's dresses (I assume she has more than one, although they all do look very similar - long, and not particularly tailored) do have white cuffs and collars. Their accent is broad Norfolk, but having been born and brought up in the county, I have no trouble understanding them, although my accent causes some difficulties to them (university – and probably television too – has knocked out a lot of my Norfolk vowels).

At first sight, I must say, I could have believed this was my world. Things seem pretty normal. There is the sound of traffic in the road outside (real motor cars, by the noise – certainly not horse and carts, which is what William and Sarah’s slightly simpler life-style might have led me to expect).

However, I'm pretty sure this isn't the Earth I came from. The smell is wrong, somehow. It’s not dirty – indeed my room is spotless, and there’s always a bunch of flowers in the vase on the table. As I’m lying here with nothing better to do, I’ve let my nose investigate. I can smell (apart from the flowers) wax polish, coal smoke, soap, cooking smells. Simply, homely things. Nothing artificial, though. Now I think about it, the air outside (what I can remember of it as William helped me here) also seemed too clean - no pollution smells. That's a bit odd, I must say, because I know I can hear cars on the road outside.

Looking around my room, the sheets are cotton, the bedspread’s a woollen blanket. The floors are polished boards. The furniture is all wooden. There’s not a single thing that I can see that’s made of plastic.

Anyway, Sarah says that she thinks I’m strong enough to get up tomorrow, so perhaps I’ll be able to get a better picture then.

I nearly deleted the end part of my last posting here, but I decided to leave it in, as it is at least a realistic record of what was happening to me. Obviously the fruit, whatever it was, that I ate caused me to hallucinate. I was completely stoned for about two days - it didn’t feel like that at the time, but that's what the calendar on my wristpad tells me.

I did try nibbling on some leaves, but my tongue and lips started to go numb, and my head started to float away again, so I stopped.

Since then, I’ve just been drinking water, but now I’m terribly weak and light-headed. I have to lie still most of the time - as soon as I move I start seeing stars, and get so dizzy that I have to sit down. I’ve gone past the stage of being hungry.

Unless I find something safe to eat very soon, or I get sent again, then I shall die here.

I’m not sure, to be honest, that my brain is working properly - I’m not what you'd call lucid at the moment - but I’ve got it into my mind that all the plant life here is toxic. That might explain why there are no other living things around - the plants have evolved this defence mechanism to avoid being eaten, and have actually killed off every other living thing.

Perhaps it’s something to do with the sunlight being more yellow – mind you, I might just be imagining that (apart from anything else, I wouldn’t be surprised if the plants weren’t dropping chemicals in the streams, so even the water may be causing me hallucinations).

Doing anything is a real effort. It's taken me all day to type this.

I've just spent half an hour starting at a clump of plants which are growing on the ground near where I’m lying at the moment. They have fruits that look a bit like strawberries - but they're coloured orange.

I suppose having another period of hallucinations is better than dying of starvation, so I think I’m going to risk eating some. Perhaps one or two won't have too much of an effect on me.

Two says ago I was sent again. Tom didn’t come with me – I rather hoped he would; I suppose I thought the aerial (or whatever) was a collection device, and I’d be picking up the rest of the team and bringing them with me.

So, just me on my own, but I still have Tom’s wristpad. Actually, as he can’t use it to access the internet, and the sat nav doesn’t work, all he could use it for would be to write messages, or use some of the ancillary features like the camera, compass, clock and firelighter. I think all those things are more likely to be useful to me than to him, so I don’t feel guilty for still having it.

If I didn’t, I certainly wouldn’t be able to write this, for so far I have found no signs of human beings, far less a computer. This version of Earth is, frankly, a bit creepy. It’s so quiet. No birdsong – and no signs of birds. Or animals. Or insects. No sign of anything alive, in fact.

Oh, apart from the vegetation of course. There’s plenty of that. Very green and lush – but plants that don’t look right to me. I haven’t come across one familiar tree, or shrub – or even a flower that I recognise.

If you forced me to say, I would guess that I was in a tropical jungle – except it’s not that hot, or humid. The sun does seem brighter than it should be, though, and the light is more yellow, somehow.

My concern at the moment is food. I’ve had nothing to eat for two days, and can’t see anything I recognise as safe to eat. Water isn’t a problem – there are plenty of streams – but with no birds or animals to hunt and only these unfamiliar plants, I really don’t know what’s poisonous and what's not. One thing a wristpad doesn’t have is a toxicity meter.

I found a tree a couple of hours ago bearing fruit that looked a bit like pears – except they were almost lemon-yellow. I cut one open – the inside was hard, like an apple, but again very yellow. Eventually my hunger made me risk it, and I ate half the fruit. It was sweet, but with a slightly bitter aftertaste – I needed to drink lots of water to rid myself of the acidity.

If it doesn’t cause me any stomach upsets, I’ll try a few more tomorrow. I’ve got to eat something, after all – I have no idea how long I’m going to be here, and there’s no point startving myself to death.

Odd. The starts have started to appear, although it’s only the middle of the afternoon. Well, not all the tsars, just two. I guess one must be venus; the other is about the same hight in the sky.

I’m feeling little dizzy. I’ve had to sit down.

I’m laying on my back now, my left arm up in the air so that I can type into the ristpad, juist over it I can see the two starts – only they’re getting bigger, and they seem to have black dots in the middle off them.

My arms are growing, the wristpa d is getting furthera way and its hard to make it owyut.

Was the sky always red i thought it used to be blue or was it green im not sure its hard to remember and the ground is palpa paalpat movng up and i think its alive the eyes in the sky are wtching me i think the worlds going to kiss me my hands are shrinking now i cannn dgdh jkkk n

As I said last time, I have enjoyed having a wristpad to use in the evenings, because I can search the internet for more ideas about what might be happening to me. Not, this time, looking into the meaning of the title Project Hermes – after all, they may have been quite innocently just thinking about the messenger of the gods function of his life – but into the physics of what I’ve been experiencing.

Unfortunately, as I’m not a scientist, most of the stuff goes over my head, and I find it hard to differentiate between crackpot theories and real physics, but a couple of things I have seen are helping me make a bit of sense of things, just at the moment.

First was an article which spoke about a ‘multi-worlds conundrum’ which said, if I understood it correctly, that at some point, a decision may be made which has two possible outcomes – and that both happen, a second (or third, or however many possible outcomes there may be) world being created so that all the possibilities can occur.

That is my understanding of the theory. What the scientist actually wrote was ‘two worlds appear for every one, each and every time there is a quantum mechanical event as a matrix of values collapses into its eigenvector’.

I don’t understand half those words, but my simple explanation at least helps me to understand why there are so many similar, but slightly different, worlds which I am visiting.

The second article didn’t explain how or why the worlds are created, but did at least suggest that this physicist believed they existed. Apparently the universe doesn’t have enough matter in it, or enough mass, or something (as I say, I’m no scientist, so I expect I’m completely garbling this). To get around this, scientists have invented something they call ‘dark matter’ – something which you can’t see, because it’s dark, and which no-one has been able to detect, but which makes up the ‘missing’ mass of the universe.

Well, if the universe is in fact bigger because of these multiple worlds that I have been visiting (and who knows, perhaps it’s not just a different Earth I visit, but a completely different solar system, galaxy or even universe) then there is plenty of mass to meet any theories of how big the universe should be, and no need, so this physicist said, to invent ‘dark matter’.

Perhaps this all makes sense to a scientist. As for me, well I’ve always believed the universe is infinite (because if it’s not, and it’s got a boundary, well, what’s on the other side of the wall?). What I can say, with absolute certainty, is that – unless what I’ve been experiencing for the last two years is all a dream – I know for a fact that there is more than one Earth, whatever any theoretical physicist may say.