# Summary of IRC Log from January 5, 2016

* A discussion about NIPS 2015 (Neural Information Processing Systems) conference papers took place, with links shared to the full proceedings: https://papers.nips.cc/book/advances-in-neural-information-processing-systems-28-2015

* Researchers discussed recent advances in memory engram technology, which combines immediate early gene labeling with optogenetics to tag neurons active during learning experiences, allowing later stimulation to elicit memory retrieval.

* A paper on "Optogenetic mutagenesis in Caenorhabditis elegans" was highlighted as a useful new technique for targeted genetic modification using light-activated systems.

* The FTC's $2 million fine against Lumosity for deceptive advertising of their "brain training" app was noted, with participants expressing skepticism about the company's claims.

* A technical discussion about converting BRL-CAD models to G-code for CNC machines and 3D printers explored various approaches, including the limitations of rasterization versus vector-based toolpaths and the support for circular arcs (G02/G03) in different firmware.

* A conversation about mitochondrial Eve and Y-chromosome Adam clarified that while all humans share mitochondrial DNA from a single female ancestor and Y-chromosomes from a single male ancestor, most of our genetic material comes from a much wider range of ancestors due to genetic recombination.