fundamentals

My seminar keeps marking arguments as valid but not sound, and I lose the distinction every time I think I have it. Both seem to mean the argument is good. Is there a case where calling something valid is actually a…

"Climate is average weather" is the line everyone uses, but averages over what, and why thirty years specifically? It sounds like a convention rather than a threshold with meaning. Is there a real statistical reason…

I can define all three and I still mix the wrong colour constantly. Something looks off in a painting and I reach for a different hue when the actual problem turns out to be elsewhere. Which of the three is usually the…

Every dynamic programming problem I have solved, I first solved as a recursion with a cache, and the answer came out identical. The tabulated version then felt like rewriting working code backwards to satisfy a…

Our case study company showed a profit every quarter and then failed because it could not pay suppliers. If revenue exceeds costs, I do not see where the money goes. Is this an accounting artefact, or can a genuinely…