This case is somewhat unconventional. Here no standard framework is required, instead, a lot of creativity and a MECE structure (mutually exclusive and collectively exhaustive) that shows the interviewer that the interviewee has an overview of the big picture, treating all possibilities.
Although this case is pure fiction, it can be seen as a market entry/new product case – the new product in this case being a method of creating energy out of nothing.
After a congress about general science in which you took part out of personal interest, a renowned scientist comes to talk to you. He swears he invented the world’s first perpetual motion apparatus. It requires no energy source and keeps running forever. It can even turn a small fan with its motion.
The scientist asks you in which markets he can monetize the invention and how much money he could make in Europe in the first year.
What would be your 30-second-elevator Pitch to try to sell the idea to Warren Buffet?
How would you price the energy produced with this new technology? And how would this change over time?
More questions to be added by you, interviewer!
At the end of the case, you will have the opportunity to suggest challenging questions about this case (to be asked for instance if the next interviewees solve the case very fast).