Henstock-Kurzweil is a neat teaching trick. Often also because it shows that definition of riemann integration is not the only possible one. It leads a good motivation for lebesque later but also to of importance of spaces.
Exams in classroom with all the time pressure is also an important part of education. May be they should be low percentage of grade to prevent too much stress but it's am important learning experience
You are definitely using it well. Not all people are such good carers of their stuff. My friend and I both both 200 Euro coat. Mine got worn out in 4 years, his is still going strong 10 years now. Same with other stuff. I just use my stuff very roughly. No point buying expensive stuff then
> A $35 JanSport that dies in eighteen months: $23 per year. Add the shipping cost when you try the warranty. Add the replacement cost when the claim gets denied. Add your time.
> A $200 bag that lasts ten years: $20 per year. Already cheaper. At fifteen years, which the well-built ones consistently do, you're at $13 per year.
This ignores the money you would earn by not giving money upfront. A 23$ expense every year is cheaper than 200$ upfront over 10 years, because you will earn 15 euros over that 170 Euro first year if you put it in S&P500. And then 12 nect year and and 10 in third year and you are already ahead of the 200 Eurro bag. And you just dont spend time in warranty. Just throw it away dn buy next one for 35 Euros.
It also purchased whatsapp