Why does this digital abacus exist?

Sometimes, old fashioned things are better. I understand the arguments of those who prefer taking pen and paper notes to typing for example, or even people who prefer analog, vinyl recordings to digital ones.
But I cannot for the life of me wrap my head around the iBrain: Digital Abacus, currently looking for funding on Kickstarter. The fact that abacuses have fallen out of style since theadoption of the conventional Arabic number system that we use today doesn’t seem to have stopped iBra