and what if something interesting happens in the line of sight only visible to the eye you just blinked with? if you blink with both eyes, you are sure you mis

and what if something interesting happens in the line of sight only visible to the eye you just blinked with? if you blink with both eyes, you are sure you missed something, if you only blink with one at the time, you will never know if you missed something. (and besides only blinking with one eye at the time would look kinda silly :)