At IFA 2016 back in September, Lenovo revealed what is, to date, the most curious Android tablet in existence. Officially marketed as the ultimate productivity device, the Lenovo Yoga Book is often billed as a glimpse of the future. Of course, a tablet of the future would be of little value if it didn’t prove to be of use today. And so we took the Lenovo Yoga Book, the Android version specifically, on an extended tour of duty, to see if this brief glimpse of the future is something we do want to live in or if it’s something we would prefer to live without. Here are some things we’ve learned.