In conclusion: 1  Consider water from any source as contaminated with disease causing organisms. 2  By far the best way to treat water is by boiling it. 3  You only have to bring the water to a boil.  Donât waste fuel; there is no need to boil water for 10-minutes, 5-minutes, or even 1-minute.
Razor (philosophy) In philosophy, a razor is a principle or rule of thumb that allows one to eliminate (shave off) unlikely explanations for a phenomenon. Razors include: Occam's razor: When faced with competing hypotheses, select the one that makes the fewest assumptions. Do not multiply entities without necessity.
A: In philosophy, realism is the belief that reality lies outside of the human mind; it is the focus on things that can be observed as well as things that exist independently of what the human mind believes to be true. An example of realism in philosophy is that a tree will exist in nature whether a human is able to recognize the tree.