"I will not fix your vacuum tubes. I will not invent your Darlington pair" I can fix guitar amplifiers, and I can still calculate the DC working point of a sil

"I will not fix your vacuum tubes. I will not invent your Darlington pair" I can fix guitar amplifiers, and I can still calculate the DC working point of a silicon bipolar based push-pull amplifier circuit. I also appreciate the general principles of negative feedback, stability and, ultimately, the unfolding of a dynamical system. I take the point being made, but the tools we use govern our learning (Heidegger, Nietzsche, hopefully not too strong for HN). There is value in the here and now as well as 100 years ahead. The Irish writer Chris Arthur writes on the theme of time passing, and his essay 'facing the family' might be of interest.