I don’t think I ever heard this before from traders. What is there to memorize? You mean all the pre-requisites for a specific trade set up? I assume you can automate that into scans. Or you mean it’s overwhelming for students to take everything in at once?
Many who buy trading systems, those who made the trading system lack so much depth. I co-owned a brokerage for short time in the 90's, learned much as to what was needed by losing traders, they were often 1.5 trades a day from being breakeven trader. My student has losing days cause he didn't look at whole picture and should not have taken an otherwise viable signal, just cause 99% of it says yes, that 1% says no and don't take it. If you have to study hard at a chart to find a signal, chances are you should pass, good trades happen in beginning and middle of a swing, not at ends and not after topping patterns. I have learned to micro analyze for scalping.
I started trading commodities in 1985, 7 years after I started long term stocks, leveraged instruments trade differently in some ways than stocks, much faster. And learning to scalp is even faster now since ES is at 4400's, becoming more like day trading. I think scalping is by far hardest to master whereas longer term you have days to make a decision, scalping is micro-seconds. There is very much to memorize.
I tried teaching systems that already automated, have had to cut back thrice, he won't give up, so am re-designing something some years back and less he has to memorize, much more signals which he doesn't like, but when chart patterns have high percentages of reversals or pullbacks, can't keep buying/selling toward that direction.
... If there are many ways to screw up, what would you consider the top 5 and how would you guard against them?
1) "I just know this is going up", having an emotional response causes loses, like when traders start "hoping", they already lost. Some experienced traders are gifted.
2) Moving protective stops, trader could be taking loss personal, like how could he be wrong.
3) Not having the answers before the question, how many posts you read on ET where someone is in a trade and don't have a clue to where to get out with lose, profit or move the protective stop, due to not having a solid Trading plan.
4) They have money spent before making it, they have no clue what it takes to have profitable weeks or months.
5) They don't have something going on side whether full time job or part time or huge sum in bank to take off stress, they can't weather the storm.

