One methodological flaw in our experiment is that we were only able to measure the radial offset of the end resting point of the subject with respect to its starting position. Better results would be obtained by measuring the length of the path traveled by the subject during its subjection to microwaves. This would most certainly require the application of time-lapse digital photography techniques and advanced computer image enhancement apparatus. A final possible problem with our results is that vitis fruits grown in different hemispheres may respond differently to microwaves, perhaps due to Coriolis effects. We believe the red subjects in our experiments may have been from Chile, while the green ones were North American.
Further work is needed to determine whether the native hemisphere of the grape affects our results.
The results of our experiments support our hypothesis that epithelial pigmentation affects vitis propulsion. This important result may go far in explaining such phenomena as slightly spritzy red wines. Resolving the intriguing open questions revealed by our work requires further experimentation and thus further funding. We thank Terry and Jennie Baker for their detailed reading of this work and for clarifying the botanical situation of the grape. We are also grateful to Alice and Gary Gray for helping to locate good grape color matches.