While Deltas store traditional information like religion, familial traditions, patriotism, story telling, fantasy, psychology and they maybe sort of create a parimiter for all the other types.
Where as Betas serve the essential function of allowing new information. I think of us as being wedged between alpha and gamma and so aware of alpha new ideas about science or technology and overall imperatives for the human race, and we can interact somewhat closely with gammas who are good at networking so we can start the spread of progressive ideas by drawing from alpha and feeding into gamma. which in turn and over time can hopefully be incorporated into delta wisdom...because the longer an idea is held as truth in society the more it will have a chance, i guess, of being picked up by delta and thought of as normal.
Deltas may be willing to encorporate those new ideas into their lives, but betas i think want to be more at the end of deciphering and or endorsing things or for lack of a better word attacking them.
Leading on I think gammas can be much more socially adept and effective, but that they also can be ellitest...and that if gamma pairs up with delta energy or ideals to the exclusion of beta input that we start to see a lot of unethical behavior.
A final note: I think a lot of beta energy ... for me anyway is spent figuring out what we believe in. we can be skeptical and not as steeped in indoctrination and i think the quadrant probably spends a lot of time in overal social ways and personal ways helping to inform eachother what ideas are important to accept.