I tried it out. I can’t recall which, but one of the hedgehog stories used E-Prime. I did it since I like constrained writing (like the questions thread), not in a quest for perfection and clarity. I found it a little helpful in the sense that using ‘to be’ can be like the passive voice. Between “It 's a little helpful” and “I found it a little helpful,” the latter helps a little. (I wrote this in E-Prime also, in the hopes that you would find that fact disturbing.) I also wrote something long without using the letter ‘O’ once for fun because of my general weirdness.