Many martial arts make people invincible in the dojo but almost helpless in the open street. Is it the same with Kalarippayattu?

Well. If someone is invincible in the dojo but helpless in the street when confronted with real life situations, the fault is either with the training imparted in the dojo or the mindset of the particular practitioner. Maybe both.

In Kalari system students are imparted training to deal with real life situations that in the unfortunate incident of a street confrontation the Kalari practitioner will almost always survive – provided the student undertakes the training program in the jutsu version ( lethal techniques). If one learns Kalari for the pleasure of learning and interested in philosophy and like then such a person may find himself helpless in the street. Top 7.

I do lot of weight training and bag work using kicks and punches. The strength training is sufficient to survive against a physical attack. In that case what is the relevance of a martial art like Kalari in the modern world?

Agree with you. You do lot of strength training and bag work. Ok, if the other guy is a bit ... more.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.