I take your point, but I think theirs goes beyond that. As above, the moon's disk perfectly masking the sun's- is an apparently arbitrary coincidence regarding our ability to function and contemplate nature here on Earth to practical ends. But in terms of advancing our knowledge of the larger universe through observation of the sun's corona- it is an extremely convenient coincidence- particularly when bearing in mind, that the moon is receding from the earth, this coincidence is occurring at the time it can be made use of.
Similarly the age of exploration by sail, occurred when it did through various circumstances of technology, politics, etc- it was not driven by the remarkable coincidence of a bright guiding star drifting into place at the precise time that could be taken advantage of, but it certainly helped speed progress enormously.
Dawkins again remarks on how 'uncannily similar' the machine code of DNA is to our own digital information systems. This did not cause our invention of digital information- but it helps us understand not just biological mechanisms, but how to advance our own information technology.
You can only put so much down to coincidence, at some point, when the die keeps rolling a 6, you have to suspect it is loaded, however profound the implications of that may be.
Those who say DNA is like our computer systems are over-egging the pudding - it is a translational code of sorts, but the resemblance ends there; computer code is simply the closest analogy we have, and it's no better than the analogy of the brain and a telephone network.
Things get pretty gnarly at the macro end also.. yes the challenges get tougher, and so without all the preceding stepping stones, placed just within our leap, we would not have come this far this fast. Again none of this was necessary for our mere 'evolutionary fitness' as a species, it guides us to an understanding far beyond ourselves and our planet.
As sjastro says (
#147) this is a classic example of
apophenia, and hyper-active agency detection. As well as making connections between unrelated events and seeing patterns in random data, we're predisposed to give agent-based interpretations for the unusual, coincidental, and unexplained.
When agency imputed to an entity, it is described in terms of spirits, ghosts, fairies, angels, devils, gods, gremlins, little people, etc. When it is not imputed to an entity, it is described as fate, fortune, karma, luck, etc., i.e. superstitious thinking. We also ascribe non-physical agency to ourselves or others, known as 'magical thinking' and psychic phenomena.
This is something even children do from an early age; it helps relieve the anxiety & discomfort of experiencing uncertain, random, and coincidental events by providing a meaningful and interesting narrative.
This kind of thinking is also at the core of many conspiracy theories, where people feel that mundane explanations are inadequate to match the scale of major (often traumatic) events, and so invoke an appropriately complex and tangled web of conspiracy to provide a satisfying explanatory narrative.