By that measure, Slack is a real and large innovation. It is not as eye-catching as self-driving cars or implantable chips — it is not basic research-y kind of stuff. But, for organizations that adopt it, there will be a dramatic shift in how time is spent, how communication happens, and how the team’s archives are utilized. There will be changes in how team members relate to one another and, hopefully, significant changes in productivity.
However, if we are selling “a reduction in the cost of communication” or “zero effort knowledge management” or “making better decisions, faster” or “all your team communication, instantly searchable, available wherever you go” or “75% less email” or some other valuable result of adopting Slack, we will find many more buyers.