Seems like you only deal with small teams. Texting, calling, or standing up and talking don't scale well. Talking doesn't work when people aren't sitting next

Seems like you only deal with small teams. Texting, calling, or standing up and talking don't scale well. Talking doesn't work when people aren't sitting next to one another in the same city, state, country, or hemisphere. Calling isn't going to work either, as you are limited to audio only and makes triaging situations more difficult. And texting is clumsy at best, and doesn't assist with triaging. And none of these methods make it easy to integrate tooling. Not to mention any sort of regulations. As for email, it works for longer form stuff. But not for having a real time conversation that involves multiple people. It's akin to saying Google Docs is useless because you can collaborate on a document in email. Like any tool, it's how you use it. Slack can be distracting if you let it. It can be useless if you don't use the tools it gives you. Can you do everything slack does with other tools? Sure. But it will require a massive amount of effort to get you up and running again.