Stephen Wolfram answers general questions from his viewers about science and technology as part of an unscripted livestream series, also available on YouTube here: https://wolfr.am/youtube-sw-qa

Questions include: ​What's the difference between bits and bytes? - Can you talk about what a "sufficiently smart compiler" is? ​​​​- Sometimes I wonder if a program can be "lifted" to an unrelated mathematical representation, in which certain transformation rules would discover a more efficient optimization than in the absence of such "lifting." I think this requires "multicompilation."