> > "easier to build your own solution than to install an existing one" - or to learn an existing one. > I can install WhatsApp in a few tens of seconds. But

> > "easier to build your own solution than to install an existing one" - or to learn an existing one. > I can install WhatsApp in a few tens of seconds. But do you now have an insanely deep knowledge of WhatsApp (i.e. what serious "learning" means)?