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More than anything, I think this all just highlights the importance of critical thinking. Continually question and test the whole chain that leads from a system of belief to you. Because it's not just science that we sometimes have to take on faith, it's everything around us, from news and politics to the idea that what I can't see continues to exist when I'm not here, or that I'm not just a brain floating in a vat somewhere.
...that won't be obsolete in two years?
Strangely enough, I was just having this conversation this afternoon about how my mindset has recently changed to looking at laptops as a disposable commodity. Now I just find the cheapest one that meets my specs and expect it to last 1-2 years. For a basic browsing laptop, that means about a $300 laptop. It's like leasing for $12.50/month, which isn't a bad deal. Give it to charity or sell it for $50 in two years.
What is unethical in that?
Because I wasn't invited.