Ever since Ed Sheeran’s 2017 hit, I just can’t stop thinking about shapes. It’s more than the earworm though: 2017 is the year in which I got deeply involved with Solid, and also when the SHACL recommendation for shapes was published. The problem is a very fundamental one: Solid promises the separation of data and apps, so we can choose our apps independently of where we store our data. The apps you choose will likely be different from mine, yet we want to be able to interact with each ...
