As we have seen, while not a panacea,
the power of vector notation really shines once
we leave the Euclidean plane and begin to work in 3D. It can allow
us to reduce a problem to its algebraic or geometric essentials
and to subsequently cleanly code the solution using any Cartesian
In addition, the interests of academic scholarship have brought
me new insights into historical thinking about seismic acquisition,
processing, and imaging that offer tantalizing hints
how more recent approaches may benefit from those ``old school''
ideas. Stay tuned!