Honestly, @Creeper0 the bold tests on your comments are wrong and I will tell you why.
Our needs are not the same every month or every week, so . With this regularly changing discretionary money, the manual investment method is effective,
First of all, this depends on the investor, there are some people who will deliberately wait a little longer for the price to dip before they buy and they are likely to be investors with a trader mindset. So why I disagree with the idea of manual DCA'ing is because some investors might wait a while before they buy, but if it's an automatic DCA'ing, they don't have to do it manually.
For the fact that automatic DCA can be adjustable when proves that both low income earners can use it. So long as DCA is involve, whether automatic or manual DCA'ing, both the rich and low income earners can use it without any challenge.
if we want to do DCA with the automatic investment method, then we must have a lot of discretionary money
No, like I have said already you don't need a whole lot of money if you are thinking of automatic DCA because it can be adjustable.
Actually I think what matters is consistency, even though you have low discretionary income or high discretionary income is doesn't matter, because what matters is your consistency.
I guess automatic DCA even helps those who can't manage their cash flow. What I mean is that most people spend too much on unnecessary things, so for them automatic DCA helps them invest automatically before they end spend their money unnecessarily.
Suppose, if you do DCA weekly, you must have enough discretionary money to do DCA for a few weeks.
DCA method doesn't mean you must save money ahead before you get started investing. You just have to buy when you have the money.
For automatic DCA, some platform will just deduct the particular amount you want when the due date reached (just like a schedule transaction).
The automatic DCA system is effective only for those who have a lot of discretionary money.
So long as it has to do with DCA method, It can be adjustable.
One advantage of automatic DCA is that you don't need to decide when to buy or when not to buy, most people who do manual DCA deliberate on when to buy (even though they have the money to), but automatic DCA strategy doesn't, so long as the amount is there, it will just deduct it automatically.
And the interesting thing is that you can adjust it at anytime.
For low-income people or ordinary people, manual DCA is still more effective.
Not partially true. Why because it all depends if the investor has a long term plan, emergency funds discretionary income.