As Mercury becomes retrograde and all the other fire associated planets will be in ascension, walking on the middle of slabs or paving blocks will be more dangerous.
The National Astrology Forecasting Office predicts that avoiding cracks will become more likely to cause imbalance and splashing from puddles under the surface of the pavement.
The NAF Office were keen to emphasise that the current warnings on walking under ladders and black domestic cats crossing paths are still in effect, though you should also be concerned if black dogs, black ferrets or black panthers cross your path.