It is basically an isolated heat trap for excess electricity/heat during the summer to be used during winter. It is rather like ground heat except for a few notable differences:

The cons are obvious:

• Higher investment,
• More complicated

The pros:

• Doesn’t need as much power (higher heat output during winter),
• The community has a goal of using 100% of produced electricity on site (as that is most economical), but this allow us to utilize the entire roof for solar energy, which will be more economical in autumn/spring.

Cost wise, for the tenants, it’s no difference, as the lower running costs of the battery is predicted to out weight the extra cost of capital, but in an emergency the house will be much easier to keep light and warm. The plan is to fit the house with batterier and V2G EV-chargers.

So far I’ve mostly changed how I do stuff, rather than what i do. Electric car instead of ICE, Bike and train for commuting, Solarpanels and 20kWh batteries for most of my summer time energy needs.

At work I have more possibility to make a difference, though. So far I’ve had batteries introduced (solar was already norm) as an accessory to “our” buildings, I’ve gotten 2 thermal batteries (sand) built and are currently investigating building mounted small scale wind power. Among other things.

That doesn’t seem relevant to the discussion at hand. The question is “is it better if something happens earlier” and if, as you say, the median reaction time is 273 ms, that means that median player a will consistently be 3 ms faster than median player b if they react to the same event all else being equal. 273 ms will beat a total of 276 ms every time in a race to react.

As bad as airing out a hot car is, it takes on a different need when its -20C and you need to thaw the car out before going to work in the morning. Much preferable to do that from inside.

Well… there should be a “right now” included in all discussions about birth rates. Case in point: Sweden. There is birth data from 1749 and examining that data show 2 distinct time periods, roughly before and after ww1. Before ww1, fairly even birthrates, after early 1800 increasing (to rather high level). Swedens last war ended 1812. After ww1 decline in birth rates, but an obvious 25 year long cycle instead. Last time there were black headlines about birth rates was 1999-2000. Sure enough 25 years ago and nothing to suggest that the long time trend has been broken. When the most recent slump in birth rates began all preschools and schools were full to the brim.