<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>izgzhen</author><text>Great story! I really admire those who dare to make such bold move. I also feel sorry for those who did similar things but failed and ended up as a forgotten tragedy. They are all heroes.</text><parent_chain><item><author>OminousWeapons</author><text>Less crazy but also very cool: the first coronary catheterization (insertion of a tube through a peripheral vein into the heart) was performed by doctor William Forssmann on himself. Forssmann&amp;#x27;s colleagues did not believe a coronary catheterization was possible without injuring the heart and possibly killing the patient, so he cathed himself, walked to imaging while cathed, and got X-rayed to prove the catheter was in his right atrium and that it could be done.</text></item></parent_chain></comment><story><title>Dr. Leonid Rogozov operating himself to remove his appendix in Antarctica, 1961</title><url>https://rarehistoricalphotos.com/leonid-rogozov-appendix-1961/</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>macintux</author><text>I’m not certain that doing something like that voluntarily in the absence of an emergency is _less_ crazy. Great story.</text><parent_chain><item><author>OminousWeapons</author><text>Less crazy but also very cool: the first coronary catheterization (insertion of a tube through a peripheral vein into the heart) was performed by doctor William Forssmann on himself. Forssmann&amp;#x27;s colleagues did not believe a coronary catheterization was possible without injuring the heart and possibly killing the patient, so he cathed himself, walked to imaging while cathed, and got X-rayed to prove the catheter was in his right atrium and that it could be done.</text></item></parent_chain></comment><story><title>Dr. Leonid Rogozov operating himself to remove his appendix in Antarctica, 1961</title><url>https://rarehistoricalphotos.com/leonid-rogozov-appendix-1961/</url></story>