Dumbing this down to just 'beans & rice' is a bit ignorant. In my culture alone we have at least 5 dishes with grain components that all taste vastly different from one another. As to the comparison, grains are often a more 'practical' type of food as they're cheap, have a long shelf life, and are quite diverse, possibly making them more appealing hackers.
I meant no disrespect here - as I mentioned beans and rice are enjoyed world-wide, in all manner of different styles. I count a few varieties among my favorite food combinations. Thanks for sharing.
Another entry in the ever-expanding Catalog of Mushy Hacker Metaphors. Joining the classics (painter, rockstar, poet) and newcomers (ironman competitor, marathon runner, martial artist) is 'farmer'. Looking forward to 'pterodactyl' and 'balcony'.