Paper coffee filters were invented in Germany by Melitta Bentz in 1908  and are commonly used for drip brew all over the world. In 1954 the Wigomat , invented by Gottlob Widmann , was patented in Germany being the first electrical drip brewer.  Drip brew coffee makers replaced the coffee percolator in the 1970s due to the percolators' tendency to over-extract coffee, thereby making it bitter.  One benefit of paper filters is that the used grounds and the filter may be disposed of together, without a need to clean the filter. Permanent filters are now also common, made of thin perforated metal sheets or fine plastic mesh that restrain the grounds but allow the coffee to pass, thus eliminating the need to have to purchase separate filters which sometimes cannot be found in some parts of the world. These add to the maintenance of the machine, but reduce overall cost and produce less waste.
Still, as a mother who wants to make sure her children are safe and happy, I worry. And I think back to how I might have done things differently. Parents should decide for themselves what works for their family, but I probably would have waited longer before putting a computer in my children’s pockets. Phones and apps aren’t good or bad by themselves, but for adolescents who don’t yet have the emotional tools to navigate life’s complications and confusions, they can exacerbate the difficulties of growing up: learning how to be kind, coping with feelings of exclusion, taking advantage of freedom while exercising self-control. It’s more important than ever to teach empathy from the very beginning, because our kids are going to need it.