The only really compelling argument I’ve heard against cybernetics (in the let’s-all-stick-circuit-boards-in-our-brain sense of the word) comes from William Gibson. The Cyberpunk luminary makes the case in an essay first printed in the June 19th, 2000 issue of Time magazine. The essay is titled, appropriately enough, “Will We Have Computer Chips In Our Heads?”
[I do not think] that we will one day, as a species, submit to the indignity of the chip. If only because the chip will almost certainly be as quaint an object as the vacuum tube or the slide rule.
From the viewpoint of bioengineering, a silicon chip is a large and rather complex shard of glass. Inserting a silicon chip into the human brain involves a certain irreducible inelegance of scale. It’s scarcely more elegant, relatively, than inserting a steam engine into the same tissue. It may be technically possible, but why should we even want to attempt such a thing?
This is, I think, basically correct. After all, there’s nothing special about silicon. What we transhuman types really want isn’t chips-in-the-brain per se, of course, but the prospect of upgradeable humanity. H+, as it’s sometimes styled. I think Gibson hits at the fundamental fact that modern silicon might very well be the wrong medium for that. I personally think the probable path forward is one that repurposes our own basic materials, whether through genetic engineering or more intricate nano-scale mechanical tinkering.
I’ve typically not been impressed with engineering arguments against direct, nerve-level human-computer interfaces and the chip-in-brain cyberpunk future they make possible. After all, engineering problems have shown themselves to fall pretty handily to human enginuity, especially in the age of modern information technologies. But the basic facts strongly indicate that using modern circuits is, itself an engineering dead-end that will need to be transcended. Circuit-boards, after all, are large, hot, and prone to failure when compared with the brain into which we might want to stick them. (Of those problems, Gibson focuses on the “large”, but I actually think that’s the least of the problems. Modern CPUs get hot enough to boil water unless equipped with sizable heatsinks and good airflow. And who wants to get brain surgery every three to five years when one of their potentially many chips burns out.)
So the problem isn’t one of engineering, then. It’s not just about finding clever ways to wire neurons up with copper leads. It’s not even about the basic problems of figuring out how to cram the chips and connections into our skulls. It’s that our current tools and materials (circuits printed in copper on silicon wafers) aren’t the right ones for the job. We might, with sufficient ingenuity, make them work, but the correct solution is to work on developing the right tools.
Of course, better yet (and the course we’re taking), is to pursue both tracks in parallel. Afterall, cyborgs already walk among us, with magnet-and-electrode ears and video camera eyes. Cybernetic limbs are also making great leaps both figuratively and literally. Of course limbs are more amenable to being improved by modern materials than are brains. In fact, they’ve gotten so good that since 2008, cyborgs are disqualified from the Olympic Games. After all, they have an unfair advantage over us regular H. Sapiens.
Welcome to the future, flesh-bags. We may never get chips in our heads, but one thing is for sure: H+ is well on its way. No matter what materials he’s made out of.