why do people manufacture ceramic fuses where one cant visibly tell if their blown ?

glass fuses are so much better in this respect in the sense there is not doubt, as to whether the fuse is blown ?

we should ban fuses where it is not visually determinable whether they have blown or not, as if you multiply the amount of time that is wasted determining whether a ceramic fuse is blown and multiplying by the number of people who dont have multimeters, thats allot of humanitys time wasted ?