You're overcomplicated things.
You sure don't make it seem simple. I mean, geez, 80°C? Am I supposed to monitor the temperature with a thermometer?
NEVER PUT IN BOILING WATER
Douglas Adams, at least, was quite adamant that the water is supposed to be boiling. He had no objections to milk either.http://h2g2.com/edited_entry/A61345
It does have the confusion since there's dozen of way of making coffee and people are usually religious about one way or another
I guess you can get into French presses and other such crazy apparatus, but as far as I'm concerned, it's just maker-filter-scoop-water-done. It did take me a while to catch on that my particular coffee maker seemed to yield a much better cup with a coarse grind rather than a fine grind – so of course I was quite distressed with Tim Hortons decided to discontinue their coarse-ground product, and now I'm starting to learn about how the grinding machine at the supermarket works. I was also very happy to find a stainless steel carafe, as I was accidentally cracking my glass ones regularly.
When I first started out, I somehow got it into my head that when faced with an empty pot of coffee, you could just dump some more water in over the already-used grounds and get more coffee, as the resulting liquid will still be brown. This I now understand to be a terrible idea.