lorem ipsum

‘BC’ is a meta-level (as opposed to object-level) term, which is the basis of the joke about a coin bearing a date of some year ‘BC’.
keywords: logic, information, perspective

lorem ipsum

Merriam-Webster’s free online dictionary fails to give any of ‘horsie’, ‘horsey’, or ‘horsey’ as the common child’s rendition of ‘horse’ (as in, “Daddy, I found a horsie!”).
keywords: errors and omissions

lorem ipsum

nice double meaning: ‘Fresh Quality Flowers’ (‘Freŝecaj Floroj’ aŭ ‘Freŝaj Kvalitaj Floroj’)
keywords: Linguistics, Language Arts, ambiguity

velocity versus speed

Although there is a technical distinction between velocity and speed, there is a good reason to consider one of the senses of ‘velocity’ to be an emphatic synonym for ‘speed’, in ordinary language, namely, that in ordinary language ‘fast’, which is the (dominant) adjective form of ‘speed’, is often used to mean ‘soon’ (e.g., “His birthday is coming fast.”), and so something ‘fast’ might actually mean something that will happen soon. So, a ‘high-velocity’ item is unambiguous, but a ‘high-speed’ item is ambiguous.
keywords: terminology, physics

local bids

The set of local bids that you should reject is a superset of the set of bids not originating in the nucleus. A local bid that does not originate in the nucleus is usually a prelude to a high-velocity posting. The generic bid that does not originate in the nucleus consists of following (like a detective) someone, stalking being a special case of following, and staring being a special case of stalking. A high-velocity posting is virtually synonymous with an attack. An example of a bid originating in the nucleus that should be rejected is that of a toddler crying for some item that is dangerous.
keywords: life, General Systems Theory

equivalences: full and partial

A full equivalence between two statements (technically ‘propositions’) P and Q can be expressed as “P if, and only if, Q”. The ‘partial equivalence’ “P only if Q” is called an ‘implication’, and the ‘partial equivalence’ “P if Q” is called an ‘inference’. (And it is a common mistake to confuse ‘imply’ and ‘infer’.) Keeping track of full and partial equivalences is done by means of what are called ‘truth tables’ and ‘symbolic logic’.
(A famous book along this line is ‘Symbolic Logic & the Real Number System’ by A. H. Lightstone.)
keywords: Mathematics, proofs, deductions, deductive chains