Part of the problem, is that you do not necessarily know if you will still be able to accumulate as much BTC under each of the strategies.  Sure you might end up investing the same amount of money, but you might not be able to accumulate the same amount of BTC, so frequently, each of us has to decide within the means that we have available, and sometimes we might not even have lump sum available to us, absent having to take out a loan or otherwise put our finances in stress in order to accomplish lump sum... but it still does not mean that lump sum is a bad idea even if carrying out lump sum might end up in certain kinds of tradeoffs, such as financial/psychological stress or even potentially not having as much cash available to buy on dips if dips were to occur after the date of the lump sum injection(s).
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You are right @JJG. The person who invested in Bitcoin with a lump sum might end up accumulating less Bitcoin Bitcoin because he/she invested in Bitcoin at once and if there is a Bitcoin dip, the person will not have any other money to buy the Bitcoin dip. It is always good to come to this thread to be guided on the best ways to invest in Bitcoin and hold.
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