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Comment "Correct" Is Subjective (Score 4, Insightful) 154

Having worked my way up through every level, the biggest thing I've learned is "correct" is amassively subjective concept, based on value statements people at other levels don't see.

To take a deliberately simple case:

I would have declared a manager insane for buying Office365 licenses. After all, you can buy copies outright for less.

Except, as that manager, any savings I get are dwarfed by the pain in the ass of keeping licensing info. Some idiot loses the info and you're out far more than the difference when you have to re-buy. Or you don't re-buy and you're vulnerable to huge fines. Or you have someone dot every i and cross every t and you pay more for their salary than you save. Or Office365 keeps everyone licensed and demonstrably so.

Same goes for commenting.

Earlier in my career, commenting was slow. I could understand my code just fine without it. It was clearly readable after all. What idiot manager wants less productive code after I jumped through hoops?

Now I've paid the price of countless devs who write code no one else can follow. If watched countless more declare they have to rewrite everything because the previous guy who swore his code was readable wrote something the next guy swears is not. My perspective is completely different. I'd now rather each person codes a little slower so the company moves faster overall.

Who's right? Everyone has a good perspective but each is colored by the values that they weigh in.

I know my devs often think my calls are "wrong" because they assign different values to those I do... But I also know I've been put in the position exactly because I have the perspective I do. The best I can do is try to explain and help them understand, listening when they genuinely see something I've missed.

Comment Could calculate based on fast rail (Score 1) 465

You'll probably get most of the value out of electronics exports from China to the US that currently go by sea when air transport would be too expensive. How much is that worth and how much more would it be worth if you could get it to consumers how much faster?

If you can get a 10% increase in price because you have all of China's exports on store shelves a month earlier it could be big bucks. Unlikely to pay off a trillion dollars but anyway.

Comment My First Death (Score 1) 363

"The first cause of death for New York City children under 13"

How many deaths do children get in New York?

First cause of death: Traffic.
Second cause of death: Silver bullets.
Third cause of death: Staking.
Fourth cause of death: Beheading.
Fifth cause of death: Kill it with fire.
Sixth cause of death: Exorcism.
Seventh cause of death: Dream Warriors.

Comment Happens all the time (Score 3, Interesting) 132

There's news like this every week. None of these is clearly better cheaper or faster to market than any other breakthrough like it at this early stage. It all evens out to a fairly steady improvement over time. Battery weight and prices still keep halving every five years or so and that's already factored into stock prices, minus some risk.

Comment They already sell batteries for power companies (Score 1) 116

From TFA:

The company created a subsidiary called ACCUmotive in 2009 to develop lithium-ion batteries. It built an energy-storage array that is now operated by German electricity joint venture Coulomb. The system's 96 lithium-ion "modules" boast a combined 500 kilowatt hours of storage capacity, which is used to stabilize the Saxony Kamenz power grid. There are plans to expand this installation to 3,000 kWh of storage capacity.

Comment Tesla battery also far larger than needed (Score 1) 334

The Tesla Battery's cost $13,000 would pay most people's electric bills outright over it's life.

The Tesla's battery is also 53, 70 or 85 kWh whereas the average household uses around 1 kW (kWh/h) and certainly can get by with a few kWh of storage to handle its overproduction of solar during a day.

In the end, it's just economics. Does solar + battery pay itself back in lowered electricity bills? If it does, nothing else matters.

Anything cut to length will be too short.