Hinduism includes many rituals which are based on religion. But within each of these rituals and beliefs there are hidden scientific facts that are known and unknown to modern science. Hinduism is not a just religion, it is keeping a lot of science hidden.
Most of the ancient rishis were also scientists. They made us follow these rituals based on science. There are no religious books other than the Vedas that deal significantly with different sciences. Ayurveda, yoga, Vedic mathematics, astrology, Vasthushasthra, geography, etc. are some of the direct examples. But most followers do not know the reason behind following rituals. It will be difficult to find all of them, but what we come to know about particular rituals can be shared with this community.
So the question here is why should we not allow questions related to the science behind rituals? Why should we not consider such questions on-topic? When we enter the public beta it is going to be an issue if we have not defined the behavior of the questions like these.