I like Excel as much as the next guy, but even in 2013 when you open a delimited text file it makes you manually tell it what the delimiters are. A computer should be able to guess whether a large text file is CSV, TSV, etc. This is an example of something Apple would get right, but Microsoft does not, even after more than a decade with this heavily-used feature. A tasteful implementer would make it do something reasonable by default, rather than making thousands of users click "Next" repeatedly and get presented with nonsensical defaults.