[lojban-beginners] Re: Where should I use sets and where should I use masses?

[ianek <janek37@gmail.com>]

On 4 Wrz, 09:04, tijlan <jbotij...@gmail.com> wrote:
> On 2 September 2012 15:47, Jacob Errington <nicty...@gmail.com> wrote:
>
> > e.g. lo'i ro jbopre cu simxu lo ka ce'u slabu ce'u -> All lojbanists know each other.
>
> simxu2 is defined as an event -- {nu} as opposed to {ka} --, which
> renders the (equally official) set status of simxu1 even more
> paradoxical. Can a set engage in an event?

Not a set, but its members:
x1 (set) has members who mutually/reciprocally x2 (event [x1 should be
reflexive in 1+ sumti]).

"mutually" is not something similar to carrying a piano, together or
otherwise. It's a property of a set, not its members.
It's a property of being a clique http://en.wikipedia.org/wiki/Clique_(graph_theory).
That way it's more logical, and hey, Lojban was designed to be a
logical language, not an easy language (we already have Esperanto!).

Otherwise we can throw away sets completely, because now you can't say
{lo ro jbopre ku zvati ti gi'e se cmima mi}. If you can do with masses
everyting you can do with sets, we don't need them.

mu'o mi'e ianek

> If the x1 was a set, having {ka} for the x2 as in your example would
> be less unreasonable. But I doubt that would be more practical than
> "simxu1=non-set, simxu2=event".
>
> mu'o

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