I believe a lot of what makes Tcl the way it is is precisely because it does things different from most other languages with regards to closures, lambdas, scopi

I believe a lot of what makes Tcl the way it is is precisely because it does things different from most other languages with regards to closures, lambdas, scoping etc. If Tcl had the other stuff, would it need upvar/uplevel or its funny braces and substitution rules? I'm no expert at Tcl but when I learnt it (mainly to use tkinter) I really had to rewire my brain to think about something as simple as _variables_ so differently