It’s not that difficult to be an expert on yesterday. The way it was done. The story of who won and why, or even the implementation of the known formula that works (worked?). Experts on yesterday have the rational and believable viewpoint. They can support their position on that pesky little thing called evidence. Of course evidence is always historical. We tend to find experts on yesterday in senior positions in organisations and they tend to proliferate and thrive in legacy industries. Places where protecting revenue is more important than growing it.
Ironically there is no such thing as an expert on tomorrow. There can only be viewpoints on possibilities and the willingness to experiment with those possibilities. What this means, is that the ideas presented by the tomorrow guy are often met with doubt and even derision. I guess we should expect this because most of what they predict simply wont happen. Statistically the tomorrow crew will be wrong more times than they are right. But within those ten crazy ideas they present one of them is usually what eventuates. And this is the time when what works quickly becomes what worked. Just ask Kodak management.
One thing I know for sure, is that experts on yesterday rarely invent tomorrow, and in times of significant change it pays to have a couple of tomorrow guys in your corner.