Though Fluidigm is essentially a tool company, which is not very glamorous, says Worthington, they were successful in raising funding because they were a real, functioning company that already had customers and were able to prove a real market. Worthington recommends not wasting time with venture capitalists that are not immediately enthusiastic about the company. Once they make up their mind against the company, there is no use pursuing it. On the other hand, when there is that mutual connection, pursue the VC relentlessly.