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Optimize why? So that we can spend the extra seconds on our social media apps? People need to learn to slow down and not try to save twenty seconds when boiling water.

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Anecdotally, with two young children (5, 1), the savings add up and mean twenty more seconds with them or not being overwhelmed after they're asleep with the state of the house.

Indeed.

No, boiling water in the kettle literally saves you 10 minutes of hanging around every single time you cook, it's a no brainier.

The time it takes for water to boil is your time to prep all the ingredients or clean the kitchen. In cooking there is no waiting.

Boiling the kettle means I can make pasta and a sauce in about 12 minutes, boiling on the stove just adds tons of time. Given that the kettle is next to the stove it's simply self sabotaging not to use it, one button press.

This will vary depending on the type of cooktop you have, and whether you have a 240V kettle.

Electric coil cooktops, and 120V kettles are the slowest.

Gas/induction cooktops, and 240V kettles are the quickest.

Yeah huge difference if you have 240V mains. A 120V electric kettle is not much of a timesaver (though perhaps still worth something if it frees up a place on the cooktop that you need for something else).

Why should I optimize my code? To save 420ms for what?

I dunno. I try to optimize everything in life, maybe it's the engineer in me (I find it fun and interesting how people do things inefficiently). I also try and measure ingredients exactly (e.g. 420g of flour, not 419g or 421g), however that might be some low form of OCD. /shrug

Whether I use that extra time or not doesn't really matter for me.

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