Plain old "Start-up Myths 101" article.

Yes I know that there are examples of some overrated, overhyped and overspent ideas but do people still believe that they get serious investments by coming up with random ideas? (except for IOT, see: https://twitter.com/internetofshit)

A little off-topic but, there exist some successful start-ups that did not go with the silicon valley way (see: http://www.nytimes.com/2016/10/06/technology/mailchimp -and-the-un-silicon-valley-way-to-make-it-as-a-start-up.html)