Knock Knock. Who's There? Opendoor.

Assess the potential and spot the openings:  “We spent a lot of time thinking about ‘What is the market for this?’ Spreadsheets have been around forever, but most of the time, people use them to track objects: people, companies, simple tables. They're not doing modeling and number crunching, which they were invented for,” says Ofstad. “And wh

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