  At a surface between electromagnetic media the Maxwell equations allow either
the usual boundary conditions, or exactly one alternative: continuity of
E(perpendicular),
  H(perpendicular), D(parallel), B(parallel). These `flipped' conditions on the
top and bottom surfaces of an FQH layer capture all its known static
electromagnetic properties and so may be considered a deduction from
microscopic quantum theory, yet are unobtainable in any realistic, purely
classical model. An unrealistic model with free magnetic monopole currents
illustrates this. At the microscopic level, the FQH system is a laboratory for
the particle concept. Identifying quasiparticles in terms of kinematics or in
terms of asymptotic states gives two different perspectives. The kinematics
exhibits exclusion rules similar to those in exactly solvable models for
quantum systems in one space dimension. An effort here to tie some of these
aspects together may be useful as a foundation for a future more comprehensive
assessment of the roles and limitations of quasiparticles.
