By Edward Nawotka Q: What do Israeli Mossad agents on a not-so-secret mission to Dubai and the digerati at SXSW have in common? A: Both groups are assassins disguised as geeks wearing thick black plastic glasses. SXSW: I think saw the future in Austin: It was wearing black plastic glasses. This year’s SXSWi — short for South-by-Southwest Interactive — gave …