One extreme reason is that the intersection may be empty, excluding all individual beliefs (even those that give rise to profitable action, ie. an apt belief[*]) from being true in the Peircean sense.
[*] From the paper Glen posted: "A belief is apt if and only if it is successful (i.e., accurate) because competent." -- Sent from: http://friam.471366.n2.nabble.com/ - .... . -..-. . -. -.. -..-. .. ... -..-. .... . .-. . FRIAM Applied Complexity Group listserv Zoom Fridays 9:30a-12p Mtn GMT-6 bit.ly/virtualfriam un/subscribe http://redfish.com/mailman/listinfo/friam_redfish.com archives: http://friam.471366.n2.nabble.com/ FRIAM-COMIC http://friam-comic.blogspot.com/