In my mind a miracle is something that can't be explained by science (walking on water, resurrection, etc.). I'm wondering if they mean "coincidence" instead of miracle. Something that is extremely unlikely, but wholly explainable by science. For example, I once went on a trip with my daughter to a far away city. Everywhere we went she ran into someone she knew. We went out to eat and a friend (who was from an entirely different part of the country) was seated at a table next to ours. We went to a venue that seated 20,000 people and it turned out that the people right behind us were friends of hers that she hadn't seen in ages. I don't think any of those meetups were miracles. They were just a bunch of coincidences.