Data can be interpreted in both ways. There are many of those you can find yourself. Starvation is already a massive problem there.Can you provide sources/links and hard data to support your belief that India is destined for mass starvation and disintegration?
However, i have a different view on this matter when people talks about China vs India's past vs future rising path.
If you go back to 1950, China & India had almost same median age. Now China is older than India, the problem is , India is not exactly as young as Nigeria, and that has a massive implication people seem to either ignore or don't understand.
With China's economic rise, China had simultaneously taken effort to modernize their education system, which is not immigration based. The result is, now China has , quite possibly,one of few best bunch of brains among all nations. Which means China can power it's modernization in it's own terms, supported by it's economy & education system. But to come to this point, you had to be prepared from 1950, making best & bright talents is long, really long process, which starts from basic schooling. Even harder is to retain those.
You come to India, india's median age is now 27, i don't think there are as many as school going children are there as they had in 2000, they have the working age population, but they don't exactly lead to scientific innovation. Another problem is, India's meager scientific achievement isn't quite spread out, it's concentrated mostly in southern india which are mostly amongst the most "advanced" & the older, compared to other one is north who are younger, but illiterate with more interested in religious riot.
And india is never going to be destination for world's best brains, i think we can agree on that. And all of the above discussion, assuming that india can ever reach it's full economic potential , with proportional to much vaunted demographic dividends.
But again, that's subjected to debate, because indians were much younger in 2000 when they had median age of 20, if they couldn't clock double digit then, what makes you think they can do it now?
That means, given the racial & religious divide, which is severe than that is of America, will lead to disintegration, i will give it 2 decade at most.