C. A. Mace
Life and career
Cecil Alec Mace was a British philosopher and psychologist who became Birkbeck's first professor of psychology. At Cambridge he turned from preparation for the ministry to moral philosophy, studying under influences that included G. E. Moore and Charles Samuel Myers. His later work considered motivation, belief, logic, and the relationship between mind and body. He also helped establish psychology as a separate department at Birkbeck and remained its professor until retiring in 1961. Sibylla belongs to a career that crossed disciplinary boundaries. Its discussion of prophecy invites readers to separate a prediction's emotional appeal from the reasoning or evidence offered in its support.
Prediction as a problem
Mace examines the future-directed work of knowledge. The foreword asks how scientific claims are tested through predictions, then considers organized inquiry extending beyond an individual lifetime. This is more than a catalogue of wonders. Speculation becomes a subject of scrutiny, particularly the difference between outlining a tendency and pretending to know a future event in detail. The essay’s own forecasts take part in that experiment.
A voice in the 1927 debate
The Dutton edition places Sibylla in the Today and Tomorrow series and identifies Mace as a lecturer in logic and psychology at St Andrews. Its opening discusses writers imagining technological and biological change, including Haldane, Wells, and Shaw. Proposed conveniences lead toward another question: how might altered conditions affect human beings themselves? The historical horizon remains visible in these assumptions and examples. Reading the predictions as arguments preserves more of their interest than merely sorting successes from failures. The foreword also calls attention to cooperation across generations as a way of studying processes that outlast an individual observer.
Examining a forecast
For each prediction, identify an observed tendency, the assumptions extending it, and the expected human response. These steps may have different support. Humor can loosen the tone without removing the claim. Use the distinction between broad outline and premature detail to evaluate the later speculation. A present-day reader can apply that standard without treating the historical essay’s confident possibilities as current scientific guidance.