2 side-rants: * Physical shower controls themselves. The typical US single-handle shower control is awful. Maybe I'm stupid, but it's never intuitive to me whi

2 side-rants: * Physical shower controls themselves. The typical US single-handle shower control is awful. Maybe I'm stupid, but it's never intuitive to me which side is hot and which side is cold. Much of the time the handle is pointing down, so you have to visualize an arrow extending through the top of the control, pointing left (hot) when the handle is on the bottom right. Sometimes they point entirely different directions, or the rotational positions of off, cold, hot make no sense at all. As I write this, it occurs to me that it's probably obvious that cold is always closest to "off", and "full on" is always full hot, but I'm over 40 and this has never occurred to me until now, so it can't be just me. Anyway, for whatever reason, when they're not labeled, i've never been able to 'remember' which side is hot and which side is cold. Again, maybe it's just me, but I've never had any other such dyslexic tendencies outside of faucet control. I think in my head "C" is on the left because it places C and H in alphabetical order? * Tankless hot water heaters. I want to like them. I've had them in my last 2 houses, covering the past 12 years. I can't imagine buying a water heater with a tank, but... The (central) tankless heaters take 15 seconds to turn on, and the water takes forever to make its way across my tiny house. So much water and time is wasted. And they shut off after some minimum flow rate. So if you try to use 'too little' hot mix (hot water heater set 'too high' or cold water input too warm, say, in the summer), the water heater decides to click off.. which you only notice 20 seconds later as the hot water trickles out of the pipes, and now you have to wash, rinse, repeat the whole awful cycle of turning the handle to full hot, waiting for hot water again, turning it down, but hoping you didn't turn it down too far. I've turned the hot water heater down as low as it'll go without much noticeable difference in this behavior in either house. Perhaps because the minimum flow rate actually depends on the setpoint of the hot water, which would make sense. It's worse in the summer. It's only a problem I have in 10% of my showers, but it drives me nuts.