...and the memeory remains...
actually mostly not. There is just the flame of desire which gives a new rise. So we use mind to understand mind. Its not about polishing our mind to be eternal or destroy it to fade for ever. We use mind to understand it, we use it somehow against it self. For this porpose we need to train it, so that it would stay where we need it.
To go back on the topic. To be able to use our mind to look in our mind, we start to look around a little. Like if we are in a dirty house and realice that we are actually not in a good an health situation.
We start to abstain from making dirt. It would be nonsens to start to clean, if we do not reduce or even abstain form making dirt. This we make in observing precepts. Then we also give away and clean the rooms a little from thinks we do not need. It does not make sense if we start washing the floor and 1001 things are standing around. They are not only dirt catcher but also hide dirty palces. This we practice by letting go of possesion (Dana) and then we start to clean.
The better we observe to abstain from making new dirt and the better we have cleared the field form unnessesarities, the more success will we have to reach the real floor and get to know it.
We can wash and clean as crazy if the do not clear the field and abstain from makeing more dirt as naturally. This is the way to be able to see deeper in ones mind. Even it seems that there is a quicker way, it is not possible beside it.
When we have cleaned it on a raw level, we are able to contionue with samadi. To try samadi without those needs amoung or befor it, will not bring success. Even if we might be able to reach the floor by polishing a small part, the nessesary surface is not reached yet. It could be even that we are frustrated if we have seen the clear floor but facing the dirt everywhere. So a solide step by step work with a lot of faith and trust is very wise and even sustainable.
Some would face a situation where they only need to polish one time because they used to work on it for a long time in the past. But to be in such a situation is somehow rare. So there is nothing lost anyway to make it according to the prescription.
A good cleansman enemy is slatternliness, starting from down and cleaning the upper later; laziness, don't clear the field from object fist; hastiness, don't make it step by step and just blur the dirt; and lacking in concentration, steping with his dirty feets into the clean areas again.
It's somehow a good training to start cleaning outwardly and get the chaos around one self sorted. How could one see his mind, clean his mind if he is not able to maintain orderliness, discipline and cleaness outside? Swepping, washing, sorting are good trainings, especial if they are even done slowly and mindfully.