Hotwire, which seems to be short for (H)tml (O)ver (T)he (Wire), is a collection of frameworks just announced by Basecamp that work together to help build “traditional” server-rendered web applications that look and feel to users like modern, Single-Page Applications (SPAs) built in React, Angular, Vue or other frontend frameworks. Basecamp’s CTO put out a blog post on why he believes in Hotwire, but most of the justification seems to be handwavy claims that JavaScript is inherently “complex,” never mind that Ruby’s syntax and dynamic type system can be just as head-scratching to a newcomer. I think that Basecamp’s built a really interesting tool, and a better argument for Hotwire can be made by fully engaging with the benefits that SPA “thick clients” bring to the table, their specific shortcomings, and all the different ways framework developers are trying to address those shortcomings today.