I was recently asked to justify my claim that the big data debate should not be reduced to a “competition of imaginations” between hype and pessimism. The future is unknowable, so we have little alternative but to use our imaginations to discuss the future. We can extrapolate from what is known which is better than pure scenarios, but even this is not perfect. What happened yesterday need not happen tomorrow and what happened in one country under specfic conditions may not be replicated in other circumstances.inning But that is still better than scenario spinning.