[Steko]

We're making fairly rapid advances on treating different cancers with the fairly blunt methods available today. Down the road nanomachines would seem to offer a fairly straightforward solution to most cancers. Obviously cells don't live forever but am I missing something that makes cancerous cells resistant to increasingly miniaturized tools?

[roadnottaken]

Yes, you're missing a lot. Your response is basically science fiction. Take a look at these statistics [1] showing cancer mortality rates over the last few decades and you'll see that we are not, in fact, making rapid advances on treating cancer. Far from it. And I don't even know how to respond to your nanomachines comment. I'm a biochemist who's studied cancer for years, and I can't even begin to imagine how a nanomachine could be of value for treating cancer.

[1] http://www.cancer.gov/statistics/find

[J_]

Thiel's view of the future is pretty aligned with the Singularity people.

As for the future of nanorobotics, I recommend you watch this interview with Robert Freitas, an expert in nanotechnology and nanomedicine [1]. The implications of nanotechnology will be huge.

He claims that nanorobotics will emerge in the late 2020's and become dominant in the 2030's. They won't just cure cancer. They'll be able to a cure whole host of other diseases that are seen as incurable today, including aging.

[1] https://www.youtube.com/watch?v=6UVet-OCFdI

[brg]

Cancer survival rates are increasing dramatically. They have doubled in the last 30 years [1], and survival rates continue to increase. In the 50's, childhood cancer's such as lymphoma and leukemia were a 30 day death sentence. Now survival is extremely common, if not the norm.

http://www.cancerresearchuk.org/cancer-info/cancerstats/surv...

[toomuchtodo]

> I'm a biochemist who's studied cancer for years, and I can't even begin to imagine how a nanomachine could be of value for treating cancer.

Nanomachinery would possibly be able to identify and remove cancerous cells from the body more intelligently then the body's immune system (similar to how evolution has brought us far enough to where we can engineer biology faster than evolution could).

Problems are either software based, hardware based, or both. This would be both.

[roadnottaken]

That's like saying "a transporter would allow you to instantly teleport an object from one place to another". You're describing something that has no basis in existing technology. Currently nanomachines are simple mechanical devices like gears or wheels. To "identify and remove cancerous cells from the body more intelligently than the body's immune system" would require technology that can't even be imagined right now. Nobody can forsee the distant future, but what you're describing has no basis in scientific reality, at present.

There are two reasons why cancer is so difficult to treat: (1) cancerous cells ARE your own cells that are behaving differently, so distinguishing cancerous cells from non-cancerous cells is very difficult. And (2) cancer cells are constantly evolving, so even when you do identify such unique features, the cancer mutates and changes this identifying feature. Decades of research has been devoted to identifying such "Achilles heels" of cancers that allow them to be uniquely and sustainably targeted by therapies and the number of successes can be counted on one hand. We already have technologies that allow you to identify unique features on cancer cells (e.g. monoclonal antibodies) and deliver chemotherapeutic drugs just to those cells (e.g. antibody-drug-conjugates) and they don't work too well.

Cancer is hard and nanomachine research is in its infancy. I can't predict the future, obviously, but I can guarantee you that people won't be using nanomachines to treat cancer for the forseeable several decades, if ever.

[toomuchtodo]

> Cancer is hard and nanomachine research is in its infancy. I can't predict the future, obviously, but I can guarantee you that people won't be using nanomachines to treat cancer for the forseeable several decades, if ever.

Want to make a Long Bet [1] on that? Years ago I would've never thought a private citizen would be delivering cargo to a space station with the goal of landing on Mars, but here we are. Reality can be unpredictable.

[1] http://longbets.org/

[mahyarm]

The difference between your unforeseeable future vs. the parent's is you could see a government doing the same decades ago, which means the technology was available that many decades ago to a private individual of sufficient resources.

His unforeseeable future wouldn't be possible because no entity could do it with sufficient resources and will right now according to him.

[minthd]

Not an expert , but don't antibody-drug-conjugates have many problems in their design that make them less the "ideal" targeting drug we're talking about - but if those are solved , their potential is quite big ?

Also , assuming we have the theoretical tech to sample a big set of cancer cells from a patient - collect a big list of all the unique characteristics, create a large collection of drug molecules targeted at all those characteristics with very very high specificity, and give them to a patient, won't this cure him in very high likelihood ?

[Steko]

"Currently"

Is a strange straw man to invoke about a future technology.

Teleportation is also a strange analogy to make for what is essentially our current cancer treatments plus miniaturization which has a fairly clear roadmap.