Board Thread:Off Topic/@comment-25396609-20170505174118/@comment-25936766-20170506163317

An arrow that extends to become a spear, definitely no. The weight would make the arrow useless as an arrow, and if you're going to use a spear then an actual spear would be enough.

Even just making the arrow bigger would not work just like that, due to Square/Cube Law. If you make something, say, double it's size, with the exact same shape, it will be twice as big, 4 times as strong, and 8 times as heavy.

And the idea of controling multiple arrows, located in his jacket, of all things, with a device on his wrist, makes utterly no sense. Or at the least, makes the idea of using arrows instead of something else, completely unnecesary.