I'm waiting to see the impressive applications. The video, probably representing their single most successful effort, shows six "bricks" being more or less jumb

I'm waiting to see the impressive applications. The video, probably representing their single most successful effort, shows six "bricks" being more or less jumbled together and called "a step pyramid". This is not exactly state-of-the-art micron-scale manipulation; and why move around imprecisely with thousands of bacteria, when you can use the same magnetic field for much more precise manipulation with a single microrobot? (E.g. http://nanolab.me.cmu.edu/projects/MagneticMicroRobot/ http://nanolab.me.cmu.edu/projects/MagneticMicroRobot/ )