Angelo was a laborer who had taken his bride to live in the home of his brother on Via Degli Orti. When his wife discovered that she was pregnant, her condition was accompanied by toxemia that expressed itself in convulsions that at times brought on temporary blindness. At three in the morning on Saturday, August 29, 1953, Antonina suffered a seizure that left her blind. At about 8:30, her sight was restored. In Antonina’s own words:

LEARNING OBJECTIVES ✔ By the end of this chapter you should:

✔ Be able to recognise when an explanation is needed and why. ✔ Be able to distinguish between plausible and implausible explanations. ✔ Be able to offer your own plausible explanations, particularly in

response to unusual fi ndings or evidence.