Read the FAQ https://news.ycombinator.com/item?id=5227923 https://news.ycombinator.com/item?id=5227923 linked in the parent comment to yours, and you can lear

Read the FAQ https://news.ycombinator.com/item?id=5227923 https://news.ycombinator.com/item?id=5227923 linked in the parent comment to yours, and you can learn about the best trade-off among time, expense, effectiveness, and legal exposure among all hiring procedures used by companies. It's low-hanging fruit to improve competitive position for a company to follow the minority of companies that use effective hiring procedures rather than the majority of companies that use haphazard or demonstrably ineffective hiring procedures.