One day, two croutons washed up on dry land at the edge of the primordial soup.
'It's our big chance. Let's escape this liquid environment,' said the first crouton.
'Where shall we go?' asked the other.
'The world is our yet-to-evolve marine bivalve mollusc,' replied the first. 'How about that way?'
'But we have no means of locomotion.'
But it was too late. The other crouton had rejoined his fellows in the swamp, happy to live out his dwindling days free of adventure.
The first crouton sighed inwardly and joined his companion.