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.
raÂ·zor. n. 1. A sharp-edged cutting instrument used especially for shaving or cutting hair, especially from the face or legs. 2. See safety razor. 3. An electric device with vibrating or rotating blades used for shaving or cutting hair close to the skin. tr.v. raÂ·zored, raÂ·zorÂ·ing, raÂ·zors. To shave, cut, or remove with a razor or similar cutting implement: razored off the mustache; razored pages from a rare book.