In the manner of that great Bengali fictional icon Byomkesh Bakshi then, the now Sydney-based Das, despite never having been seen in a dhoti in public, has remained a satyanweshi - a seeker of truth.
The world-renowned markets expert and polymath pulls no punches while sharing his findings in his latest book the Age of Stagnation - Why Perpetual Growth is Unattainable and the Global Economy is in Peril.
A world economy fuelled largely by financial engineering, and directed by policymakers, who "prescribed medicines of which they knew little, to cure diseases of which they knew less" is in danger of unravelling and the risk of "sudden collapse is ever present", writes Das, ranked among the top thinkers in the Bloomberg Markets' Most Influential 50 in 2014.
Even if such a sudden collapse is fortuitously averted, there are no painless options left to avoid a slow decline, he goes on to stress in his hugely enlightening book. Sooner or later all of us have to "sit down to a banquet of consequences", he warns.
In an interview with R Rajesh Kumar, Das gives us a taste of reality as he sees it - touching upon Japan and how it mirrors the woes of the world economy, the mirage that is Chinese growth, Modi and India, and on what the common man can do in these difficult times.