"It's a very reassuring feeling to turn on the stove, see that blue flame and know you had a part in bringing a stable energy source to your community, " Glenn says.
And they will not be able to receive surprise presents, like special cookies or favorite movies, which are often brought to the space station on supply shuttles when someone starts feeling homesick or maybe a little blue.
Something about clicking on that blue-and-white thumbs-up icon somehow engenders just as strong afeeling of engagement among Millennials as owning more than one item from a brand.