Slack is the opposite of organizational memory
The "organisational memory" point is one of the driving factors behind the tool / startup I'm building.https://getctx.iotl;dr - It's basically all the good bits of Enterprise Search, but set up to pull in the data from the cloud based SaaS tools we all use in 2018, and designed for digital / product teams.The rationale is, I think that there is no sensible, central place for  a company to store all the types of info they have. Slack doesn't do it all, Confluence, JIRA or Trello aren't enough, Google Drive is good for some things...In my experience (and from many people I've surveyed and spoken to) most companies end up with loads of these tools, and it's a nightmare to find specific pieces of content when you have 5+ options for where it could be.The answer isn't one tool to rule 'em all - it has to be an abstraction - make the data available but store it (master it) in the various locations.So, my product indexes Trello, Slack, Google Drive, GitHub and email (and, in beta, JIRA). It'd be great to get some HN-style feedback :-)