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Re:How to Use Slack and Not Go Crazy by cecilpl2 on Friday June 22, 2018 @12:21PM (#17375181)
In my company, Slack has replaced email and Skype, so that we have fewer tools to search rather than more.

The marginal gain is lightweight group discussion, and the ability to pull people into a conversation that's already in progress.

It actually lightens the cognitive load of which you speak by organizing information by topic.

Re:How to Use Slack and Not Go Crazy by s3r3nity on Friday June 22, 2018 @12:35PM (#17375332)
I think that's the best way it can work: it has to replace those other tools, and have buy-in from the group to almost exclusively use Slack.