A well known SETI (Search for Extra Terrestrial Intelligence) scientist recently made the following statement.
“The real question to me isn’t why ET isn’t everywhere, but why ET’s machines aren’t everywhere.”*
The standard thinking, that basic point being made is that it’s dangerous and costly to boldly go anywhere out there in person relative to staying at home. But sending out unmanned probes instead, probes which might be sophisticated enough to not only explore but reproduce themselves using resources discovered while exploring would like a cancer spread out more and more until they have covered every cubic mile of space. Maybe there’s just one ET; zillions of ET’s machines.
Perhaps ET and ET’s machines are one and the same. Even if there is but one ET race or civilization, there could be an abundance of ET’s machines (that’s standard thinking noted above), but all containing not just ET but lots of ET (that’s not standard thinking). Translated, if you want to ‘boldly go’ (i.e. interstellar travel), it may make more sense to be an actual part of the spaceship instead of just being a passenger. Better rocket propulsion might prove to be fairly irrelevant.
Premise: Exploring is in our very makeup. Humans do not want surrogates to do their exploring for them. It may be necessary, but it’s never enough. A photograph of Paris isn’t good enough – I want to see the Eiffel Tower for myself.
While a robotic probe discovered the location and wreck of the RMS Titanic, humans had to go to the time and trouble and cost to see and explore the shipwreck in person.
We don’t send an unmanned robotic rover to climb Mount Everest; we do it ourselves, even though it’s a very dangerous activity to life and limb.
I’m sure the scientists who guide the unmanned rovers on Mars are happy little campers; they would be even happier if they were on Mars in person.
Sending Pioneer 10 & 11; Voyager 1 & 2 out into interstellar space is all fine, well and good but wouldn’t you want to travel to, say the star Tau Ceti, in person? An unmanned probe (a descendant of Pioneer or Voyager) exploring Tau Ceti and sending you back data doesn’t generate quite the same thrill as being there up close and personal.
However, it’s difficult to get you to Tau Ceti. Your life span isn’t long enough to last the trip at projected interstellar velocities achievable in the foreseeable future, and in any event, you’d need massive life support infrastructure which adds lots of additional mass requiring lots of extra energy and thus cost to your journey. All up, too much mass, too much energy, and too much cost.
But, what part of you really needs to get to Tau Ceti? Does your big toe need to go? Does your liver need to get up close and personal with Tau Ceti? No. The only part of you that really needs to encounter Tau Ceti is your ‘inner you’, your mind, not the physical body part of you apart from that which houses the mind – your brain thingy. Alas, even your mind, your wetware, is part of your physical body (your brain) and it won’t last the distance from Earth to Tau Ceti.
Now let’s pause to consider the following interlude. Somewhere around the time of humanity’s transition from a hunter-gather lifestyle to a life of domestic settlement and leisure, even if not always domestic bliss, there was a remarkable but hardly remarked upon revolution. There was a slow but sure transition from Darwinian natural selection and evolution to artificial selection and evolution.
So how does artificial selection come into play? What useful role is it? Well, we now augment enough of our natural abilities with some sort of non-biological technology to allow us ultimately to produce offspring that otherwise would not have been produced. Reproduction is ultimately the name of the game; no reproduction, no selection, no evolution, natural or otherwise.
That transition to a post biological humanity probably all started when the first human used a long stick as a prop; as a cane to help him support himself and walk easier, instead of lying helplessly on the ground as prey for a saber-tooth cat! We are now in control, or at least better control over our fate. Clearly, like the stick-cane, we’ll continue to use artificial means – technology – to better our existence and defy the odds Mother Nature throws our way. That path has already been well and truly started down. Since the stick-cane we’ve added eyeglasses and hearing aids and dentures and artificial joints and drugs** to help us with our sex lives and to breed and we’re talking about using nanotechnology nanobots to circulate through our blood stream seeking out nasty cancer cells from the inside and destroy them while unclogging our arteries, plus various prosthetics that increase our strength, etc.
There are in addition to non-biological technology those other sorts of means to achieve artificial selection, as in genetic engineering techniques for improving the human lot, like DNA splicing and manipulating the structure of our genes, etc., but I want to stick with biological plus non-biological integrations (bioengineering), like human-computer interfaces often used to immerse yourself in virtual reality simulations or games.
We’ve come a long way in applying artificial selection technologies since those hunter-gather days. Now where does it all end? And how might artificial (as in technology) selection help us, and by analogy ET, boldly go?
Fast forward say 500 years. Might it not be possible to transfer the ‘inner you’ contained in your wetware, the brain thingy of yours, and transfer it into software and hardware made of more durable non-organic stuff like silicon and steel? If so, you’re now onboard, but as part of the electronics, the computer, that’s onboard. You and the ship have merged.
Of course your wetware, once downloaded or transferred into a software package, could be transferred again and again into many different computers, sort of like an endless ‘copy and paste’ operation, each copy of you on a ship headed to some other interstellar destinations. In fact, everyone could explore anywhere and everywhere they wanted. If a lot of ‘people’ (could we still call ourselves ‘people’?) wanted to go to Tau Ceti, that’s as easy as if just one wanted to go since presumably there’s room on the ship for many ‘brains in the electronic vat’. Maybe everyone is headed everywhere. Eventually everyone experiences everything, but not quite at the same time of course.
I mean You #1 goes to Tau Ceti, while You #2 heads off to say the star Sirius. However, You #1 and You #2 don’t share your separate experiences even if you both communicate them to each other. Each is a surrogate to the other. But of course You #1 could go to Tau Ceti and then go on to Sirius; You #2 goes to Sirius and then on to Tau Ceti. Both ‘copy and paste clones’ get both experiences.
Regardless of those variations on the theme, your lifespan has increased by orders of magnitude. There’s little if any real ‘life’ support needed. There might even be a ’sleep’ switch to turn you off while the light years slowly tick by. [That alone, by the way, takes care of the 'they (aliens) can't get to here from there' argument, often used as a debating point against the UFO extraterrestrial hypothesis.] And, when you reach Tau Ceti, there will be mechanical devices, rovers or robots on board you can download into and thus explore the Tau Ceti environment – in person!
Post-biological development or bioengineering is our ticket to the stars, even if the big toe has to stay at home! So, I wouldn’t be surprised if each and every one of ET’s machines didn’t actually contain ET or ET’s entire population for that matter!
Of course some real extraterrestrials might not have to resort to the ‘brain in the electronic vat’ to get from there to here, but it’s one way of doing it.
And as to why we don’t see ET or at least ET’s machines, since they (the machines) are supposed to be everywhere, well perhaps our scientist hasn’t heard of UFOs, or perhaps taken the time to study the subject. If s/he did, well perhaps s/he wouldn’t have raised the issue in the first place since ‘everywhere’ obviously includes here.
*Impey, Chris (Editor); Talking About Life: Conversations on Astrobiology; Cambridge University Press, Cambridge; 2010; page 325.
**In fact all your pharmaceutical drugs and over-the-counter medicines are technological fixes designed to help you beat the odds.