## What’s it called when you use a hypothetical claim to disprove another claim?

So what I’m asking is probably niche, but it’s one of those things that I’m not sure what to call it by, so apologies if the title seems off. I think the best way to describe it is to use an example: Say in a courtroom, you (a defense attorney), assert that a witness is … Read more

## What is the difference between these two sentences? “If A is true, then B is true” and “Since A is true, B is true”

Consider the following two sentences: If A is true, then we can conclude that B is true. Since A is true, we can conclude that B is true. I have two questions: What is the difference between two sentences above? “Since A is true, then we can conclude that B is true.” Is this sentence … Read more

## Trying to understand the logic behind this sentence: The lecture will be given if at least ten people are there

I am not really sure whether my question is suitable here, but I will give it a try. Consider the following sentence: The lecture will be given if at least ten people are there. From the perspective of everyday speech, which statement below will be equivalent to the sentence above: "At least ten people" is … Read more

## “following conditions exists” or “all of the following conditions exist”

In a technical description I’ve written “When the following conditions exist” and listed Condition 1 to N. When I said “When the following conditions exist”, I meant “all the following” conditions should exist. Do be specific/accurate, should I have to modify my writing as “When all the following condition exist” Or “When the following conditions … Read more

## Which should be the correct word in the given pragraph: Hermeneutics or Semantics?

While reading through the book on logics. I came across this paragraph. Paragraph is as-is from the book: Outline of Logic (Schaum’s) At this point we give a rigorous formulation of the intended interpretation (semantics) of the five logical operators. The semantics of an expression is its contribution to the truth or falsity of sentences … Read more

## Single word to replace “allowed to be missing”

I want to express my knowledge about the presence of absence of something. My knowledge is divided into three different cases: I know that the thing doesn’t exist. I don’t know whether the thing exists. I know that the thing exists. Sadly, neither of those is the negation of another one. However, I can define … Read more

## Understanding the purported ambiguity in “Every boy didn’t run”

I am a com­puter sci­ence pro­fes­sional. I am read­ing the book Nat­u­ral Lan­guage Un­der­stand­ing by James Allen where he writes: “Every boy didn’t run” which is am­bigu­ous be­tween the read­ing in which some boys didn’t run and some did and no boys ran. As I am not a na­tive English-lan­guage speaker, I couldn’t un­der­stand the … Read more

## What is the logic behind “better suited”

I’m confused about the expression "better suited." I’m editing a piece that addresses how to write a particular type of article for a particular website. Logically, which is better: Structurally, the news format is better suited to the customer success story … Structurally, the customer success story is better suited to the news format … … Read more

## Logical term for when an object is the same thing as itself

I’m trying to see if there’s a word for this in English and having some problems making a definition in my program. I want to say that two objects are not only have identical properties/values but that these objects are in fact one and the same thing. Not that they’re equivalent, not that they are … Read more

## Is there a word (or shorter/clearer phrase) for “incorrect implication/suggestion”?

Example sentences: I don’t drink bleach very often. Why does one plus one equal three? The first sentence seems to suggest that I do drink bleach occasionally, even though from a strictly logically perspective, “never” drinking bleach meets the criteria of “not very often” too. The second sentence can’t be answered because it presumes that … Read more