Your company is a maximization machine—it wants to make the best use of its finite resources—so it is greatly interested in identifying precisely who to invest in, and how.

The problem with this stems from the way your company executes on these good intentions. Why, for example, does it assume that it will net a good return only from certain people? Surely, the cliché that “Our people are our greatest asset” applies to all of the people in the company. As we’ve seen, every human brain retains its ability to learn and grow throughout adulthood. For sure, each brain grows at a different speed and in a different way, but this implies only that each person learns differently, not that—categorically—some people do and some don’t. Therefore, the best course of action for any maximization machine worth its salt would be to figure out where and how each brain can grow the most, rather than zeroing in on only a select few brains and casting aside the others.

In any case, it’s hard to generalize across an entire firm. It usually comes down to individuals. Just like everything else.

So when you reach out to pitch an investor, make sure you’re reaching out to the right person. Talk to founders who have worked with the VC in the past—who’ve gone through tough times together—and find out which partner is operational and helpful and smart and which only cares about the money.

Google Ventures, now known as GV, was an investor. They knew our financials and had always been extremely supportive, so I wasn’t worried about the number. I was worried about which teams we’d work with, what technology we’d share, what products we’d build. Nest wasn’t joining Google for the money—we were joining to accelerate our mission. So it was always mission first, money second.

Together with Google, we went through every single function—marketing, PR, HR, sales, every part of the company. We established where we could create synergies and where we couldn’t, figured out which managers would be assigned to us, how we would do the hiring, which perks people would get, which salaries they could expect, which teams would be working together closely, and how those relationships would be established.

It took a lot of time. In fact I was starting to get a lot of eye rolls. “Really, Tony? You want to get into the details of this now?” Yes, yes, I do. It’s important.

And it was—critically important and usually overlooked.

Most acquisitions are driven and overseen by bankers, and bankers only make the real money if the deal goes through, so they’re motivated to move fast and get paid. They don’t care about getting every detail of what happens to employees right. They don’t really care about cultural fit. Not deeply.

The Kauffman Foundation study also illustrated that almost 86 percent of companies that succeeded in the long term did not take VC money. Why? Because a company’s interests may not always align with the interests of its backers.

I was also told that a brand-new CEO shouldn’t be trying to make huge acquisitions. I was “crazy,” as one of our investment bankers put it, because the numbers would never work out and this was an impossible “sale” to the street.

The banker had a point. It’s true that on paper the deal didn’t make obvious sense. But I felt certain that this level of ingenuity was worth more than any of us understood or could calculate at the time. It’s perhaps not the most responsible advice in a book like this to say that leaders should just go out there and trust their gut, because it might be interpreted as endorsing impulsivity over thoughtfulness, gambling rather than careful study. As with everything, the key is awareness, taking it all in and weighing every factor—your own motivations, what the people you trust are saying, what careful study and analysis tell you, and then what analysis can’t tell you. You carefully consider all of these factors, understanding that no two circumstances are alike, and then, if you’re in charge, it still ultimately comes down to instinct. Is this right or isn’t it? Nothing is a sure thing, but you need at the very least to be willing to take big risks. You can’t have big wins without them.