Can the more complex really arise spontaneously from the simpler?
Does it ever?
That is what a selection mechanism is supposed to do, to increase complexity incrementally and spontaneously because the more complex is better at reproducing itself (because complexity is potentially more efficient at using resources).
But the evidence to support this vision of complexity arising spontaneously seems to be embedded in either theoretical or various scientific disciplines - and is thus only as valid as those academic disciplines, which may mean there is zero intrinsic validity in these claims when disciplines are incompetent, corrupt or ineffective.
Are there any common sense examples known from common experience.