Hong, try reading Page 140 again. And this time start from the *beginning* of the section titled "Unarmed Attacks".
It is *very* specific. It talks about "Striking for damage...is like attacking with a weapon, except for the following:"
And *then* it lists AoO's, 'armed' unarmed strikes, unarmed damge, and dealing normal damage. But **ALL** of these are under the initial paragraph, is *very specifically* states striking for damage. damage is a key word here.....
If they wanted weapons not to be usable for trips by default
(stupid as it would be), they should have put it in the book.
If they wanted weapons not to be usable for unlocking, they should have put it in the books.
If they wanted weapons to not be usable for flying, they should have put in the book.
Hey, some weapons say they let you fly, but maybe that is just 'excess verbiage' and *all* weapons let you fly. That is still 'consistent' with the rules.
Or better yet, everyone knows you can stir a pot with a dagger, so my +3 dagger and weapon focus should give me a +4 on my cooking skills. (it doesn't say it can't)
Again, you have avoided the challenge given you. *YOU* state that the ability to trip is 'excess verbiage'. Yet you can not find one *other* example where they use 'excess verbage'. It seems mighty convenient....
No one is saying you can't 'use' a staff to trip, just that you don't get any particular *benefit* from it.
Now, you may say you don't like that, you may house rule it, you may rule 0 it. But your belief is not supported by the rules.
Hey, if I bullrush with a +5 staff, do I get a +5 on my bullrush? huh?
Some weapons are 'special' and can help with tripping, WoTC just decided that staffs/etc. just are not special enough.
You want to use a staff to trip, fine. But you are still subject to a contest, and may get counter-tripped. And you cannot use the 'bonuses' of the staff to help with the trip.
If you do, you are changing the rules.
.