So you’re saying they would use a different base, but still use Hindu numerals? Why would you think that? It’s absurd.
No. I'm saying that even if we manage to figure out their numerals, we shouldn't ass-u-me that they're using the same base as us. I picked ONE (of many) ways to illustrate that even regarding universal constants, "ET" may think enough differently from us to make understanding very difficult. Why would you think otherwise? It's absurd.