Tarascio v. Canada, 2012 DTC 5046 [at at 6785], 2012 FCA 30 -- summary under Business Source/Reasonable Expectation of Profit

The taxpayer's degree in mathematics and experience with various forms of gambling were not a sufficient basis to reverse the trial judge's finding that the taxpayer's gambling losses were not incurred as part of a business, given evidence that the taxpayer's principal motivation in gambling was thrill-seeking and that he lacked any systematic gambling practice or methodology (for example, a portion of his losses were incurred on slot machines).