Air conditioners using Freon cooled far more quickly than air conditioners using modern hydrofluorocarbons.
Leaded gas burns better than unleaded (this is why aviation gasoline is still leaded).
In both of those cases, we recognized that it was okay to accept a modest loss in efficiency in order to eliminate some pretty massive externalities. I think the same principle applies here. Yes, your team communication may have never been better prior to Slack. But is the marginal improvement in communication for you worth the externality of Slack, Facebook, Google, etc. harvesting all of our personal data and making it available to those who do not have our best interests in mind? I maintain that it is not. The world, as a whole, would be better off without Slack, Facebook and Google, even if some individual users would be worse off.
EDIT: changed "aviation fuel" to read "aviation gasoline"
Just in case anyone is alarmed, only Avgas is leaded. That's used in ICE / piston engines, generally installed on private aircraft and small regional airliners up to 10 seats or so. It is hoped that alternatives to leaded Avgas will be approved in 2018 or soon thereafter.
The vast, vast majority of passenger-kilometres flown each day use Avtur ( kerosene ) which is not leaded.
Leaded gas burns better than unleaded (this is why aviation gasoline is still leaded).
In both of those cases, we recognized that it was okay to accept a modest loss in efficiency in order to eliminate some pretty massive externalities. I think the same principle applies here. Yes, your team communication may have never been better prior to Slack. But is the marginal improvement in communication for you worth the externality of Slack, Facebook, Google, etc. harvesting all of our personal data and making it available to those who do not have our best interests in mind? I maintain that it is not. The world, as a whole, would be better off without Slack, Facebook and Google, even if some individual users would be worse off.
EDIT: changed "aviation fuel" to read "aviation gasoline"