Back in $2008,$ Ireland's richest man, Sean Quinn, was reported to be worth about $$6$ billion. However, in just two years, Quinn lost it all amid Ireland's real estate market crash and the Great Recession, according to the BBC$.$ Not only did he lose everything, Quinn also suddenly found himself in debt to the tune of some $$3$ billion. Like Batista, he is no longer among Bloomberg's list of the world's billionaires. A few background investigation into Sean Quinn's private life showed that he had the option of investing in either oil and gas or real estate but opted for real estate because his father lost lots of money many years earlier in the oil and gas industry. In addition he chose real estate simply because market news predicted that the only lasting profitable industry will be the real estate industry in the future. Choose the most appropriate answer below. Question $4$ options: Sean must have fallen for conservatism bias and more importantly did not have reliable real estate industry data to analyse before jumping in Sean definitely must have used an inappropriate forecasting technique to predict the success rate of the real estate industry. In addition, Sean must have fallen for overconfidence bias being a Billionaire himself with lots of money to through around. Sean must have avoided the oil and gas industry out of fear and more importantly he relied on an enticing publication without carrying out proper due diligence. Sean on the contrary must have relied on his gut feelings and that did not use an objective forecasting techniques to determine the future of real estate or oil and gas industry.