minipie That is not the definition of an objective observable fact, pretty much every aspect of it can be challenged:
Objective: it's clearly not objective as it is the subjective experience of two people. No effort has been made to make it objective through, for e.g., the use of a disinterested observer, the setting-up of control conditions, the recording of results, etc.
Observable: while it is true that you observed this happening you set up no formal criteria for your observation, e.g. what counts as disrupted sleep, what counts as sleeping through, and therefore your observations cannot be consistently compared with those of others. For example, my friends claim their DS sleeps really well, having been at their house at bed time several times it means that their DS is put to bed and left to cry for 20 to 45 minutes. They don't mind this and think he is unproblematic in his sleep. This is a subjective observation, which by its very nature, can be misleading if you are looking to generalise results.
Fact: at best you have seen B follow A (if we ignore the above problems), you have not in any way shown that A caused B to occur. Even if you appeal to other parents on MN who used your technique with B as a consequence there are equal numbers of parents who used a different technique with B as a consequence or no technique at all and B still occured. My friend's baby has slept 12 hours through in her crib with no effort on her parents' behalf from 6 weeks to now (2yo). In addition for everyone who has seen B occur after A there are the people who tried A, or another technique, or nothing at all and B still did not occur.
The whole point of scientific studies is to examine A and B under controlled conditions as well as to discover the rationale behind the relationship between A and B and account for any possible relationship between them.
I never said you were delusional, I merely criticised your argument for being invalid.
CoteDAzur of course I can tell you are attempting to be personally disparaging but I can't tell what this contributes to the discussion so I am not sure how to respond to your contribution.