manvillej

309 karmajoined 4 anni fa

comments

5 giorni fadiscuss

I just don't see how the fuel costs of getting things up to space winning out unless production is located up there. especially since rocket launches tend to be extremely static.

More dangerously, I think that would inevitably lead to space being the battlefield. Since that area doesn't need any more shrapnel orbiting at 17,500 mph; it seems an idea best left to the drawing board. The cleanup required will make clearing mine fields seem like dusting the living room.

11 mesi fadiscuss

I think this is a step forward, but I think it is better to think of access in terms of what responsibilities a person or group has.

When new access is to be given, it should be framed in the context of what new responsibilities are required.

I think this framing provides not just justification, but can provide inherent expectations of a users behavior that is easier to inspect and interrogate if needed.

anno scorsodiscuss

I found this little pocket mathematics notation book when I first studying undergrad in this used book store in Boston. it literally carried me through Calc, Linalg, stats, dynamic programming, stochastic processes, game theory, economics, etc.

I ended up copying it by hand along with every exam and test notes over my entire degree into one little moleskine notebook. its a god send any time I have to remember how to do something or learn something new.

anno scorsodiscuss

RIP Academia as a whole

anno scorsodiscuss

reddit had a nice list of the pros and cons: https://www.reddit.com/r/NuclearPower/comments/17k0wcc/natri...

I understand the risks around sodium, but the "passive natural circulation cooling" I don't understand. Is it more feasible with this design and why?

" Pros:

    high temperature means we can use process-heat which is a much more efficient use of heat.

    fast spectrum neutrons means we can burn importantly troublesome parts of nuclear waste.

    fast spectrum is also better for breeding new fuel, significantly increasing how much energy we can extract from uranium/thorium.

    passive natural circulation cooling is much more feasible.

Cons:

    fast spectrum is a little more complicated to control.

    fast reactors require high enrichment.

    inspection of the plant is very difficult with liquid metal.

    high temperature liquid metal doesn't play nicely with metal pipes.

    sodium burns in air and is explosive with water.

    we simply do not have nearly as much experience with sodium as we do water and that really cannot be understated.
"

2 anni fadiscuss

probably anecdotal, but I live in a new apartment building <2 years old. near CONSTANT elevator issues. 1-2 of the 3 elevators are out at a time. its been this way for a year.

can't wait for my lease to end.

2 anni fadiscuss

this isn't even a software things. Its any production process. The greater amount of work in progress items, the longer the work in progress items, the greater risk, the greater amount of work. Shrink the batch, shorten the release window window.

It infuriates me that software engineering has had to rediscover these facts when the Toyota production system was developed between 1948-1975 and knew all these things 50 years ago.

2 anni fadiscuss

This is a standard technology company strategy. Isolate your customers, remove their options, markup the price.

2 anni fadiscuss

Governments pay to keep food at the cheapest point possible to ensure stability. a fed population doesn't kill their governments. Agriculture is not a regular industry; its a national security issue

Farming is not a profitable endeavor. There would be a lot less financial advisors in the world otherwise. A carbon tax will either drive up prices or reduce suppliers, increasing prices. Reducing farmland will require more efficient methods which will also drive up prices

The result will be the public pays more for food, not the agriculture industry makes any more or less money. It will require more imports which will come from countries with less regulation and more exploitable resources.

We've seen the story of disruptions to the food supply play out before. The reality is this is a more dangerous gamble than most people realize.

2 anni fadiscuss

a combined tax and subsidy to try to drive farmers into more sustainable practices in a fiscally neutral way isn't a bad idea, but I think it is just a very risky and necessary roll of the dice.

I think inevitably, there will be price increases. The questions is just how bad and how many farms survive the transition.

2 anni fadiscuss

I am very conflicted on a carbon tax for the agriculture industry. It is going to sidle a cost to an industry of razor thin margins. The transition from regenerative agriculture is expensive & rising food costs has a destabilizing effect.

There need to be changes, but I am not convinced that this will have the desired effects. Its quite possible this leads to a net conversion of farmland to residential or commercial property rather than nature.

2 anni fadiscuss

package.json does not capture all the technologies in a repository. just the JS ones. This seems to capture full stack technologies. This would be very helpful when evaluating existing projects either as a consultant, new team member, open source, or evaluating a vendor's codebase or project.

2 anni fadiscuss

I would perfect my video gaming art. Teenagers in their basement would fear me after school.

2 anni fadiscuss

it seems to be Easy Task + increasing audience = doesn't really do much.

and Difficult Task + increasing audience = improved performance

which makes sense to me. 1 person is a distraction. a group of people is an audience.

2 anni fadiscuss

per day though. I think others are right that it has applications in space. going with the butter example, 5 people on a year long mission is almost 11kg you don't have to bring up to space.

on an environmental perspective, if applied to everyone, its almost half a quadrillion kJ removed a year, plus supply chain logistics, waste, packaging,

I still think its probably a ridiculous pipedream, but even pipedreams are meant to be dreamt.

2 anni fadiscuss

I have this little book that I cannot find right now that is pretty explicitly that. just a little math symbol dictionary. its small enough to fit in a pocket and was invaluable all through college.

2 anni fadiscuss

hey this might be a stupid detail in implementation, but if the poisson simulation of arrival and completion are started cold, then random assignment of events could assign a completion before an arrival, or there could be more completions than arrivals? Arrivals should always be greater or equal to completions?

Edit: I remembered by stats class. merging poisson distributions requires Independent processes. since start and completion are dependent, its not mathematically valid.

but I am an engineer and it works, so whatever

2 anni fadiscuss

you go to school for it. Stats, applied mathematics, operations research, industrial engineering.

I went for industrial engineering. we learned the math as pure math, then the math as free language problems, then how to identify and collect data to identify their attributes, then simulate and verify those processes, then test for variations in the underlying assumptions of those processes.

They never really did teach me to code well in a language that was useful, I had to pick that one up myself.

2 anni fadiscuss

I feel like any solution that replaces excel must solve a larger problem outside the scope of the spreadsheet.

Data intake, preprocessing, solving performance limitations, executing automated decisions.

If it’s just a “better excel” it’s not better enough.

2 anni fadiscuss

I have a colleague in tech over there on the product side. They do a ton of very interesting work: https://open.nytimes.com/

They have a much higher bar for quality and boutique solutions than almost any organizations.