Author: Urs Format: MarkdownItexadded a remark ([here](https://ncatlab.org/nlab/show/A+Concise+Course+in+Algebraic+Topology#Problem)) on possible problems with Lem. 17.1.7 in "More concise...", following discussion in another thread ([here](https://nforum.ncatlab.org/discussion/7841/strom-model-structure/?Focus=95311#Comment_95311))
<a href="https://ncatlab.org/nlab/revision/diff/A+Concise+Course+in+Algebraic+Topology/8">diff</a>, <a href="https://ncatlab.org/nlab/revision/A+Concise+Course+in+Algebraic+Topology/8">v8</a>, <a href="https://ncatlab.org/nlab/show/A+Concise+Course+in+Algebraic+Topology">current</a>
added a remark (here) on possible problems with Lem. 17.1.7 in “More concise…”, following discussion in another thread (here)