"For some peculiar reason, a certain section of our country was alienated whenever 'Kaun Banega Crorepati' was held, " Amitabh told in an interview.
"Now because of rapid growth in mobile and internet, a large section of people that is not necessarily from urban areas but from midtowns, smaller cities and even rural areas, is conversant about what's going on in the rest of the world. Not only are they conversant, they have every knowledge about it.
"There is a great effort on their part to improve their conditions and some of the contestants, from several recordings that I have already done, are from either very small villages or small towns but they are very enthusiastic and very knowledgeable and have gone on to win Rs. 300, 000 and Rs. 700, 000. One of them even won Rs. 25 lakh.
"But sadly what's happening is that even though they are educated, they can't go beyond a certain level because they don't have the finance, " he said.
KBC 4 will go on air on Amitabh's 68th birthday, Oct 11, on Sony and the Bollywood megastar says returning to the hot seat felt like dejà-vu. He was the original show host, while Shah Rukh Khan took over for the third season.
"Yes, of course, there is a feeling of having been there before. But every day is so new in KBC, the type of contestants, what he is going to say, how far he is going to go -- makes it more interesting. It's the contestant that makes the show, not me.
"There are many things that I don't know. Almost 90 percent I don't know but, yes, it's always very educative, " he said.
Having done it before, Amitabh still goes for rehearsals.
"Nobody is ever going to be perfect, least of all me. And I think it's a fallacy to think that we know everything and therefore we don't need any rehearsal.
For anything that's going to be public, I want to be absolutely sure what I am going to do and what the mechanics of the show are. No amount of preparation is going to be enough for something like this.
"You may think I have worked in about 200 films and have been working for 41 years, so going in front of the camera is a cakewalk for me; no it isn't so. I still have butterflies in my stomach every night when I have to go for shoot next morning.
" (I think about) what are my lines, whether I will be able to say my lines correctly, whether I would be able to give the correct performance, whether the public will be able to appreciate that. . . , " he said.
This time too Amitabh would avoid watching the show with his family.
"I have actually kept away from watching KBC with the family because I am too scared to sit with someone to watch it. I would retire to some corner of the house where I can't hear or see anything and wait for the report to come from the rest of the family.
"I think I would be doing something similar this time also, " said Bachchan.