<prompt> Human: I have seen several posts here asking which funds to choose. But instead of asking you to choose them for me, I want to understand the principles.Lets say these are the funds in my 401k plan: What are the heuristics you would use?There are lots of odd options with past performance all over the place. And people saying that past performance doesnt guarantee future results. How do I distinguish between goodbadso-so funds?For those of you who know more about funds, there must be fairly straightforward rules. Can you share them with me and others who are not as enlightened?  <response>: I added topic flair to your post, but you may update the topic if needed click here for helprpersonalfinancewikiflair.You may find these links helpful:- 401k Fund Selection Guide- 401k FAQs- How to handle I am a bot, and this action was performed automatically. Please contact the moderators of this subredditmessagecompose?torpersonalfinance if you have any questions or concerns. 