as to allow the appropriate modes to exist and have their proper scope. This will be very costly to do directly, so use of a real-space (infrared!) renormalization group or some other novel technique might be necessary.

After this is done, it will still remain to address the related but perhaps still more challenging challenge of measuring the [*tricritical*]{} behavior. They are expected to be governed by mean field theory, up to calculable logarithmic corrections. In addition there are crossover exponents and a critical equation of state awaiting measurement.

Fantasies
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### Reinvent Nuclear Physics

The historical origin of strong-interaction physics, and its main appearance in the natural world, is of course the physics of atomic nuclei. Although with modern QCD we have achieved an extraordinarily beautiful and “complete” theory of the strong interaction, this fundamental progress has not greatly advanced our understanding of nuclei. There is an obvious, good reason for this. The energy scales of interest in nuclear physics are of order a few MeV, while the basic QCD scale is a hundred times this. So essentially nuclear phenomena are governed by the residua of complicated cancellations among much larger basic QCD forces. It is probably unrealistic, and 