If the potential of electric aircraft could be realized, the resulting fault tolerance would eliminate most engine failure accidents. The current technology is at a stage of development similar to the early days of aviation, with a similar range of good to silly ideas. Just as R&D propelled aviation to practicality, I expect R&D to eventually result in practical electric aircraft. Are they ready for prime time now? Of course not. But incremental step-wise improvements in battery and other technology continue.