#### Logical Force

logical force

the measure of how strong a proposition is - how strong/weak a statement is

types of logical force

modality, quantification

weak modality

-possibility - just above 0% chance something is true -terms: may, could, might, can, occasionally

moderate modality

- probability - more than 50% chance - terms: probably, likely, usually

strong modality

- necessity - 100% chance - terms: will, must, definitely, always, is/are, do/does, necessarily

how many modality categories are there?

3

modality

how certain we are something will occur

quantification

how many things have a certain quality

how many quantification categories are there?

3

weak quantification

- possibility - at least 1 -terms: some, a few, several, many, a significant number

moderate quantification

-probability -more than half -terms: most, majority, over half

strong quantification

-necessity -100% -terms: all, any, each, every

conclusions

conclusions can be supported only by premises of equal or greater strength; conclusion cannot be stronger than the premises

modality

how certain is that something will occur

quantification

how many things have a certain quality