 TSB  can be understood as an attempt to pin down the inchoate thought that the description of the world in terms of perfectly natural properties is “complete” or “exhaustive”. Sider  (2011)  argues that  TSB  fails to capture the intuitive idea of completeness, primarily on the grounds that ‘it imposes no meaningful requirement of completeness for necessary truths’.  §4.10  and  §4.11  below will consider some different strategies for capturing the thought, which are plausibly taken to be stronger than  TSB.  Sider’s own preference is to cash out the thought in a metalinguistic way, as the thesis that “every sentence that contains expressions that do not carve at the joints has a metaphysical semantics”. Unfortunately there is no space to explain the novel conception of “metaphysical semantics” Sider is appealing to; however it is worth mentioning that Sider does not take his thesis about metaphysical semantics to imply  TSB.