#philosophy 

## Structure

The starting point(s) of an argument is/are its **premises**.
From the premises an argument derives a **conclusion**.

If the premises are not factual, then they are **untrue**.
If the reasoning is fallacious, then the argument is **invalid**.

"Logical" $\LARGE \neq$ "Sensible"
An argument may be valid but full of bullshit


## Forms of an argument
### Modus ponens
Full name modus ponendo ponus:
If A is true, and $\LARGE A \rightarrow B$, then B is true.

### Reductio ad absurdum

^3d8591
If a proposition Q and its negation $\LARGE \not Q$ are found to be both true, then the premise is false.