In this thoughtful paper, Mechanic discusses the differences between quantitative and qualitative researchers, focusing on health-related issues. It should, of course, be evident to readers that the issues he discusses have applicability far beyond medical sociology. The same issues arise in all kinds of social research and the excellent examples he gives can be expanded easily to examples in areas including education, criminology, industrial relations, social stratification, and others. In my reading of his paper, Mechanic discusses both differences between methods at a single point in time and differences in measuring process across time. As a quantitative survey researcher, I will comment on my perceptions of the similarities and differences between observational and survey methods for cross-sectional research. I then discuss some methods for bridging the gap that do not involve diaries. Finally, I discuss procedures for measuring process using observational and diary methods. [ABSTRACT FROM AUTHOR]