Question

That is where your reasoning falls down.

Accepted Answer

(intransitivehttps://en.wiktionary.org/wiki/Appendix:Glossary#intransitive, figurativelyhttps://en.wiktionary.org/wiki/Appendix:Glossary#figurative) To failhttps://en.wiktionary.org/wiki/fail.

Sentence	That is where your reasoning falls down.
Definition	( intransitive https://en.wiktionary.org/wiki/Appendix:Glossary#intransitive , figuratively https://en.wiktionary.org/wiki/Appendix:Glossary#figurative ) To fail https://en.wiktionary.org/wiki/fail .

Reasoning Falls That Is Where