[mahmud]

Your article doesn't list any of the library features that tipped the scale in favor of Arc. It's unfair to the MzScheme developers and users to dismiss their platform without telling them what's lacking. Please revise the article and flesh it further, if you have the time, because as it stands, it doesn't stand well under scrutiny.

Public technical rationales aught to be a little more than "just cuz" and personal preference. If you wanted a discussion that is ..

[anc2020]

I'm sorry but this seems an aggressive comment to me. CatDancer did mention the preference of simple macros over MzScheme's more complicated hygienic macros. Beyond that, Arc is different from Scheme and everyone knows it. The differences are documented and they are the reason why Arc is not Scheme. You do not have to challenge the piece just because you don't particularly like the changes Arc made in comparison to Scheme.

[CatDancer]

Your article doesn't list any of the library features that tipped the scale in favor of Arc.

The features of Arc are well described in the Arc tutorial, http://ycombinator.com/arc/tut.txt would you recommend that I include a link to that?

it doesn't stand well under scrutiny ... public technical rationales aught to be a little more than ...

Well, I had posted it to the Arc forum, where people are already familiar with Arc. I expect that your criticism is valid if it had been intended to be a technical article.