  The overall frequency and other statistical properties of binary systems
suggest that star formation is intrinsically a complex and chaotic process, and
that most binaries and single stars actually originate from the decay of
multiple systems. Interactions between stars forming in close proximity to each
other may play an important role in the star formation process itself, for
example via tidally induced accretion from disks. Some of the energetic
activity of newly formed stars could be due to bursts of rapid accretion
triggered by interactions with close companions.
