Simplify the following text for a Grade 8 native English-speaking person.
Original: Jumping spiders ' visual acuity exceeds by a factor of ten that of dragonflies , which have by far the best vision among insects ; in fact the human eye is only about five times sharper than a jumping spider 's .
Simplified: Jumping spiders ' visual acuity exceeds by a factor of ten that of dragonflies , which have by far the best vision among insects . Human eye are only about five times sharper than a jumping spider 's .