The idea that something can be both a wave and a particle defies imagination, but the existence of this wave-particle "duality" is not in doubt. ... It is impossible to visualise a wave-particle, so don't try. ... The notion of a particle being "everywhere at once" is impossible to imagine. - Paul Davies, 1985
...nature has arranged that it is impossible for man to feel “right” in any straightforward way. Here we have to introduce a paradox that seems...especially sharpened in man. The paradox takes the form of two motives or urges that seem to be part of creature consciousness and that point in opposite directions. On the one hand the creature is impelled by a powerful desire to identify with the cosmic process, to merge himself with the rest of nature. On the other hand he wants to be unique, to stand out as something different and apart.- Ernest Becker, 1973
In A Nutshell: Sub-atomic entities exhibit both individual particle and collective wave behaviors, depending on how they are observed.
Please note: when we talk about "dualism" here we are not speaking in either/or terms. Instead, as the above quotes indicate, we are talking in both/and terms. For example: a computer connected to the internet is both an individual terminal and a part of the larger network at the same time.
This video presentation demonstrates the partical/wave duality.
Particle or Wave? - a brief explanation of the particle/wave duality.
The Photon Has Two Faces - a more in-depth (and amusing!) take on the subject.
Modern Light - A (pretty deep) history of the science of light since the late 19th century.
How It Can Apply In Our World
Social Norms 101 Primer - Resources from Hobart and William Smith Colleges on this approach, which strives to shape responsible alcohol use through an individual/group perspective.
Common Ground Community - while most social work focuses on the needy as individuals, this organization tackles the problem of homelessness by integrating individuals into communities.
Common Ground on Housing Crisis - a BBC article about Common Ground Community and a similar organization in London.