> Battery redundancy: The scale argument again. This is an order of magnitude harder to achieve on a much larger man-carrying "drone". Isn't it much easier bec

> Battery redundancy: The scale argument again. This is an order of magnitude harder to achieve on a much larger man-carrying "drone". Isn't it much easier because you have capacity (weight carrying ability) for many more cells, and the chances too many of them fail is much lower? If you have 3 cells, 1 of them can fail at any given time, and you're left with 66% of power, but if you have 200 cells, and 1 or 2 of them fail, you don't even notice. How do you mean that it's harder? Electric cars certainly don't seem to have any problems with this and their batteries are much more reliable than the ones available for drone usage. Also with big size/capacity you can easily include additional systems like temperature control which increase reliability because they don't weigh as much in relationship to the whole vechicle.