Here's an evolutionary dead-end from the Glove family tree. These fingerless mitts from Bestway have an opening for a thumb, the index finger, and then the remainder of the fingers. The modern evolutionary forms of the fingerless glove have only a thumb-hole and a finger hole, or finger-holes for every digit.
Why did this form of glove never really catch on? I suppose there's no real advantage in having just one finger enclosed. Unlike this scooter glove, where the enclosed finger gives you more control over your throttle, the poor Bestway fingerless mitt had little to offer humanity and can now only be found, stuffed, in museums.
