Scientific and religious explanations come together in an odd way at Stonehenge and similar monuments. They can be interpreted as megalithic calendars, or devices for astronomical prediction, as well as ritual burying grounds – and the reason we can reconstruct them as gigantic observatories is precisely that we can calculate today exactly what would have emerged from calculations done 4,000 years ago.
Yet to call Stonehenge a purely scientific enterprise is clearly wrong. When you consider the immense labour and complex social organisation required to put all those stones in place, you could be inspired to ask "where would the sun have risen at midsummer 3235 BC". But surely the much more interesting question is why this question should have been thought so important in that culture.Scientists make science work, but it is not scientists who make science possible.