Let me tell you this story.
More than a decade ago when purchase of Ming class were on planning table, a retired Admiral wrote a detailed opinion piece in a national daily that why he thinks, buying old Ming class isn't good enough idea & detailing the pros of buying new subs, also stating the importance of starting a submarine force (& doctrine).
In an unprecedented move, serving Navy officers & ISPR went out of their way, assuring the old gentleman that, how Ming class is just a START!!
That's an interesting story, isn't it?