Guess? Yes!
Heavily criticised? Yes......... but I recognise that many outstanding 'breakthroughs' in knowledge and research have been heavily ctiticised...... it's just that people delude themselves later on by forgetting ...... and can even decide that they supported knew results 'from the start'. We are very good at that.
Credible Hypothesis? This comes straight out of your knew 'Science is God' prayer-book. 'Oh Lord, may I receive the wisdom of 'Credible Hypothesis' and may I turn my eyes away from that which offends the common consensus of Scientists.
Peer Reviewed? Oh Lord even as I walk through the valley of the shadow of extreme ignorance, Theism, and especially oldbadger, I shall fear no idiots's and fool's ideas. For my Peer Reviews and my Degree (if I have one) will comfort me, all the days of my life.