Juan Orbea

Sodium fast reactors (SFR): In SFRs, liquid sodium acts as the coolant instead of water. Liquid sodium, compared to water, can handle higher temperatures at lower pressures, which improves the efficiency and safety of the reactor.

Bill and I have been frequently paired in a variety of venues as pessimist and optimist respectively. Recently a Noble Prize winning panelist dismissed Bill’s concerns, exclaiming that, “we’re not going to see self-replicating nanoengineered entities for a hundred years.” I pointed out that 100 years was indeed a reasonable estimate of the amount... See more

Downloading the Human Brain

So Chris tried his hand at chipping away at this problem — but concluded the nature of the problem wasn’t quite what he originally thought. In this conversation we talk about that, as well as:

The mathematically obvious path will feel like “the right decision.” But note that what even shows up on your life dashboard is put there by your network. And the math associated with each option — the rewards and frictions and probabilities — are determined by your unique network. And your network is the result of the network decisions you made... See more

Valuation, growth, burn, and ambition are all a function of the size of the opportunity.