This chapter proposes a systematic approach to research where theory, lab results, common sense, field data, and econometrics are all integrated into one’s research toolkit. The approach is illustrated by considering work done on an artifactual field experiment in Denmark. The chapter is organized into four sections. The section entitled “Policy Lotteries” introduces the concept of policy lotteries, giving a few examples. The section entitled “Risk Aversion” discusses how to draw inferences about risk attitudes using the systematic approach that includes conditioning these inferences on smaller-scale lab experiments, on sample selection effects and elicitation methods, on econometric and statistical strategies such as sampling frame and structural estimation approaches, and on theoretical and common sense considerations about out-of-domain predictions. The section entitled “Discount Rates” discusses inferences about discount rates and demonstrate the power of joint estimation of risk and time preferences as motivated by theory. The section entitled “Lessons Learned” expands the joint inference discussion to longitudinal issues such as temporal stability.