When a conjecture inspires
new hopes or creates new fears, action is indicated. There is
an important asymmetry between hope—which leads to
actions that test its basis—and fear, which by
restricting options inhibits testing of its basis. As we know
only too well, many of our hopes do not survive their tests.
However, fears accumulate untested. The inventory of untested
fears has always made humanity disastrously vulnerable to
thought control. While science was independent of politics,
its greatest triumph was the reduction of that
vulnerability.
But today scientists are dependent on politicians to fund
research. Can dependent science carry on the proud tradition
of dispelling fear which led to the optimism of the
Enlightenment and to the modern world it inspired? Or will
science's uncertainties be concealed to serve politicians
seeking power by converting mass ignorance into mass fear?