Its superficial to suppose the immediacy of slack is its only feature. The reality is that email fails to serve the purpose for complex discussions that involv

Its superficial to suppose the immediacy of slack is its only feature. The reality is that email fails to serve the purpose for complex discussions that involve many people, especially when you're using a rubbish email system like outlook. Another form, be it meetings, chat, forum, whatever is required for this... and to be fair, gmail and the like offer some form of searching and sorting nested threads... ...but your complaint is broadly the same as the argument against having meetings in general. Certainly, it is an oppinion, but not helpful or realistic. Slack is disruptive, but 'just use email' isn't the answer.