When we hit the first one , we were fortunate that we did n't fall , as the bike tried to slide out from under us . We managed to keep it upright , and ended up walking about a hundred yards in one other place . We ended up with 28.5 absolutely great miles today . The battery died in the Flight Deck shortly after passing Mentor , so I felt like I was riding pretty blind a good part of the time .

Answer the following question: Why did the narrator feel fortunate to have avoided a fall ?
The terrain was difficult .