Johan proposes as thesis: use modularity to
control scattering and tangling.

My thoughts about:
Mechanisms to control scattering and tangling

enumeration
  explicit enumeration of join points

pattern-based = predicate-based: exploiting regularity in the sets of join points
  pointcuts and type patterns in AspectJ
  traversal specifications and edge patterns in Demeter (e.g. DJ)

  pattern-based specification of scattered sets of join points in a graph (e.g. class graph or
  dynamic call graph) uses the structure of the graph to express the sets. But because
  it is pattern-based, it leaves out details from the graph and is therefore structure-shy.

  Example: pointcuts in AspectJ and traversal specifications in Demeter.
  pattern-based expression of scattering/crosscutting and structure-shyness are inherently linked

Johan says modularity is such a mechanism?

Aspectual methods are used to deal with scattering. They are encapsulated with data to
form a module. Each aspectual method has a multiplicity that says wether it may mapped
1 or several times. Aspectual methods with multiplicity 1 may be called directly.

Johan: please can you expand more how we use modularity to
control scattering and tangling.

-- Karl