Shri Nara
I know that no one will be ready to analyze any logical reasoning, when people have fixed their mind that what they have learnt is correct. What ever is against one's modern belief will be called superstitions. There is nothing like Hierarchy in Varnashrama Dharma. Do you know Vedas? Purusha Suktha says all four Varnas came from Bramha. All are same. It is only the job they do classify them. It is better to say that one is Kshatriya or Brahmana based on job, rather than filling lot of information in forms like Hindu, BC/OBC etc. Ok. I am not willing to speak more on this, as i am not idle to debate each and every thing. Taking it into consideration or not is your wish. Let my superstition lye with myself. No issues.
The theory of Spirituality is proved by science of today. Nothing is wrong, though they are theories. But, science of today fails some times, in spite of lot of instruments. A few examples for you, in available time.
1. Andal sings in Tiruppavai, "Velli Ezhundu Vyazhan Urangitru", means, "When Venus rises, Jupiter sets". Ask an astronomer. He will tell you the same thing, with the help of a Telescope. But, this is astronomical truth.
2. Pragalatha listened to stories from Naratha, while in his mother's uterus. It is proved today in Japan that baby in mother's womb can listen to music.
3. Kambar in Ramayana says, "Sadha Kooritta Conilum Ulan". Cone means atom. Even when atom is split into 100 pieces, Rama lives in all those. So, concept of atom was also known.
4. Astras like Bramhastra has properties equivalent to nuclear bombs of today.
5. During eclips, people use dry grasses (Darbai) in all consumables and had a practice of taking bath after eclipse. Haven't you heard that modern scientists say, there are probabilities that germs can be formed during eclipse? Dry grass is antobiotic. Taking bath is also to maintain health.
6. Bramha Muhurtha is 3 to 6 am. But, it is the time when you get pure oxygen for healthy life.
Many many many examples like this. I can go on saying. But, i will stop here due to lack of time. The point is, scientists of today, don't know to the extent to what our ancestors knew. It is pitiable that we are re-discovering every thing with the help of instruments and proving our ancestors points again on other way.
I am sure that our systems were 100 percent correct and pure in the ancient times. It is only those who lived in past 300 to 400 years corrupted the society without understanding the back ground. Even practices like Sathi, Dis-respecting & uneducating women were followed recently. Do you know how much importance does Vedas give for Women. Vedas respect women as God.