Summary: Tom Davidoff, an associate professor of economics at UBC's Sauder School of Business, Doug Findlater, the mayor of West Kelowna, Michelle Stilwell, the B.C. Liberal MLA for Parksville-Qualicum, on B.C. speculation tax. Desiree Nielsen, a registered dietitian and author of Un-Junk Your Diet, on vegetarian and vegan diets.