Five Phases of Weak Neutral Current Experiments from the Perspective of a Theorist

I give my personal perspective on the past, present, and future of weak neutral current experiments, emphasizing the experimental inputs; the theoretical difficulties and inputs; the role of model independent and global analyses; and the implications at each stage. hep-ph/yymmnnnComment: 37 pages, LATEX, 19 figures (not included), hard copy available on request, UPR-0553

Precision Constraints on Extra Fermion Generations

There has been renewed interest in the possibility of additional fermion generations. At the same time there have been significant changes in the relevant electroweak precision constraints, in particular, in the interpretation of several of the low energy experiments. We summarize the various motivations for extra families and analyze them in view of the latest electroweak precision data.Comment: 5 pages, 2 figures, minor change