2MiB, 544x1246, Capture11.png View SameGoogleiqdbSauceNAO What pen do I use for math? Anonymous Thu 28 Nov 03:44:32 2019 No.11182286 ViewReplyOriginalReport Quoted By: >>11182510 >>11182680 >>11182732 >>11182844 >>11183079 >>11183100 >>11183572 What pen do /sci/entists use for doing math? Which one has the largest evolutionary advantage?