but most researchers would agree that they all reflect real abstractions that humans make They reflect a particular language in its well-written form. However,

but most researchers would agree that they all reflect real abstractions that humans make They reflect a particular language in its well-written form. However, humans are extremely robust against syntax errors. I am not a linguist, but I think this speaks in favor of lexicalist approaches: we can be very free in word order, as long as our brain can match up e.g. verbs with their expected arguments.