elbasti

This is incorrect. SpaceX has a trillion in Market Capitalization, not a trillion in Equity. These two concepts are no the same. The equity value is the theoretical intrinsic "worth" of a company, and has a very simple definition: Equity = Assets - Liabilities.

Market capitalization takes into account the future value of the business, while equity (an accounting concept) only looks at present day cash & liabilities.

When a company gets liquidated, the future growth/value of the business is, pretty obviously, zero, so the "market cap" is irrelevant. What matters is what is left over once all debts are liquidated.

SpaceX's equity at the time of their IPO was $34 Billion (it's in the S1!). You can also see in their S1 that their cash decreases by about $8B a year, so unless things change they should be underwater in about 4 years.

Here's what this means for SpaceX for those of you uninitiated in bond-math:

1. SpaceX issued long-term bonds whose coupon (ie, "interest rate") was 6.5%.

2. Those bonds are now trading for less than their face value. That means that if you buy one of those bonds on the secondary market, you will get a return (yield) of 7.387% (if the price of a bond goes down, but the coupon stays the same, the yield goes up).

3. This doesn't affect SpaceX directly, but it tells you that if SpaceX were to issue new bonds today, they would have to offer 7.4% coupon on them, not 6.5%. Note that even though that was caused by a 10% drop in the bond value, it's a 13% increase in cost of borrowing!

SpaceX is a cash-flow negative company that depends on debt and selling equity in order to pay the bills. They will have to issue bonds again, and those bonds will be more expensive.

Note that the shortest maturity bonds don't have to be repaid for 5 years, so the impact on cash is not going to manifest for a while...at least 5 years time (assuming they did another bond offering tomorrow). In that sense it's a nothingburger.

The immediate impact it could have is if spacex depends on issuing new, shorter-term debt (lines of credit, etc) whose price could be impacted by the market's perception of their riskiness.

I would love to have this image available!

I have an android phone which means I use android auto fairly often. The sheer quality destruction it's experienced since transitioning to Gemini is incredible.

I experience this mostly when asking for music. Before gemini, mistakes were common but deterministic. It was easy to understand where the query had gone wrong and so how to fix it. Example:

"Hey google, play Blackstar"

(Plays the album blackstar by David Bowie, not what I wanted)

"Hey google, play "Blackstar by Radiohead"

(Plays the right thing).

Now:

"Hey Google, play Blackstar by Radiohead" can result in playing... something vaguely semantically related with no way to course correct. In this exact instance (happened yesterday!) it played an album by the hip hop due Black Star.

I will admit that there are some superpowers hidden in Gemini that were not present in the previous AI assistant. I recently discovered that Gemini can manipulate the navigation app, and a prompt like "Mute alerts" works, which is kind of cool. However like OP said, it's incredibly verbose, which is super annoying.

Your daily reminder that there is no scenario in which putting data centers in space is easier than putting them in Texas, or Morocco, or literally anywhere else.

The only problem that "data centers in space" solves is the problem of trying to scale a rocket company where the potential demand for rocket launches is simply not that big.

This is correct. The only problem that "data centers in space" solves is the problem of trying to scale a rocket company where the potential demand for rocket launches is simply not that big.

> The question will be: how much of the current compute capacity craze will local hosting give the kiss of death to and what that means for the market.

This will depend on how much inference happens for consumer (desktop, local) vs enterprise ("cloud"), vs consumer mobile (probably also cloud).

I would assume that the proportion of "consumer, local" is small relative to enterprise and mobile.

There are some people that believe that writing is an act of creative expression. In other words, that writing is primarily about the act (and as such, it's a quite selfish activity). Editing destroys the expressive act and must be avoided.

These people's writing is usually incoherent and they are very proud of it. If you've ever read a bad new-age self-help book you've probably encountered writing like this.

Good writers understand that writing is about communication. The initial act of writing (ie, word puke) is worthless. What matters most is a piece of writing's ability to communicate clearly.

This writing is usually pleasant, concise, and clear.

> Compare that to ~30% of all energy use for transportation. So approximately 40%*4% = 1.6% vs 30%. I find your correction to be more wrong that the initial statement.

I don't follow. The comparison is 30% of energy use for transportation vs 4% for AI, and soon 30% for transportation vs 10% for AI.

This is wrong. AI uses ~4% of the US grid, and projections are that it will grow to 10%+ in the next 6 years.

And most of that new capacity will be natural gas. That increase would basically whipe out the reduction in CO2 emissions the USA has had since 2018.

> relativity was only recently fully backed up with experimental data.

Gravitational deflection (General relativity) received pretty important confirmation in 1919, only 8 years after Einstein first proposed it.

Time dilation (Special realativity) was experimentally confirmed in 1932.

What is the "ELI5" summary of the practical limits & scaling laws that govern robotics?

The current "futurist" vision is one of humanoid robots taking over many/most jobs done by humans today, but - as someone that routinely hires human welders & assemblers - the dexterity required for most ad-hoc tasks seems many many decades (if not more?) away from what I see robots do--yes, even the fancy chinese jumping ones.

This has led me to think one of two things:

1. The robotics revolution will not come. It's predicated on the idea that advances in robotics will follow a curve of the same shape as advances in compute/ai, which will not happen. OR...

2. There has been some paradigm-shift or some breakthrough that has put robotics improvement on a new curve.

To an outsider, what I see in robots is not categorically different than like, the sony AIBO dog in 1999. It's significantly better of course, but is it really that different? (Whereas what we can do in compute-land today is categorically diffrent because of the transformer model breakthrough).

So:

1. Have there been any breakthroughs that would lead us to believe that a robot will be able to like, look under a table to adjust a screw?

2. What are the scaling laws & practical limits to present-day robotic dexterity? Is it materials? Energy density? What?

3. What is the real rate of improvement along these key dimensions? Are robots improving linearly? Geometrically? Exponentially?

4.Or should I keep discounting robotics until we get our first robots that are made of meat? That I'd believe would result in exponential change!

If by "survival" you mean surviving against a bloodthirsty regime that killed 10,000 people in January alone, then yes: the people of Iran are fighting for survival.

This is correct. I regret that assertion and have added a comment reflecting that.

If those numbers are correct, then my assertion that "Almost certainly, any reasonable depreciation schedule of the cost of training will result in leading labs being presently wildly unprofitable." is incorrect.

And I admit that I made that assertion from my gut without actually knowing if it's true or not.