  This talk follows by a few months a talk by the same authors on nearly the
same subject at the Coral Gables Conference. The ideas presented here are
basically the same, but with some amplification, some change of viewpoint, and
a number of new questions for the future. For our own convenience, we have
transcribed the Coral Gables paper, but with an added ninth section, entitled
"Problems of light cone current algebra", dealing with our present views and
emphasizing research topics that require study.
