Useful perspective to keep in mind for the next time one receives unfairly critical comments about speculative work:
Successful research enables problems which once seemed hopelessly complicated to be expressed so simply that we soon forget that they ever were problems. Thus the more successful a research, the more difficult does it become for those who use the result to appreciate the labour which has been put into it. This perhaps is why the very people who live on the results of past researches are so often the most critical of the labour and effort which, in their time, is being expended to simplify the problems of the future.
– Sir Bennett Melvill Jones, British aerodynamicist.