A problem boundary is the imaginary line between what a
problem is, must be, should be, or could be, and what it
isn't, mustn't be, shouldn't be, or couldn't be. This approach
works by creating awareness of the different components of the
boundary and then seeing how far they can be loosened. Here
are some ways of making a boundary more visible.
NOT-
ing the problem statement Take each
significant term in a problem statement and define it more
clearly by saying what it is not, for example:
How to develop (not replace, alter,
reduce, ...)
the motorway (not other
roads, airlines, ships, ...)
network (not
piecemeal)
to allow for (not compel)
the gradual (neither imperceptible nor
rapid)
replacement (not augmentation)
of rail (not air, ships, ...)
transport (not pleasure use, prestige
use)
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