However, the possibility of actually constructing a conscious machine was probably first discussed by Ada Lovelace, in a set of notes written in 1842 about the Analytical Engine invented by Charles Babbage, a precursor (never built) to modern electronic computers. Lovelace was essentially dismissive of the idea that a machine such as the Analytical Engine could think in a humanlike way. She wrote:

It is desirable to guard against the possibility of exaggerated ideas that might arise as to the powers of the Analytical Engine. ... The Analytical Engine has no pretensions whatever to originate anything. It can do whatever we know how to order it to perform. It can follow analysis; but it has no power of anticipating any analytical relations or truths. Its province is to assist us in making available what we are already acquainted with. One of the most influential contributions to this question was an essay written in 1950 by pioneering computer scientist Alan Turing, titled Computing Machinery and Intelligence. Turing disavowed any interest in terminology, saying that even "Can machines think?" is too loaded with spurious connotations to be meaningful; but he proposed to replace all such questions with a specific operational test, which has become known as the Turing test. To pass the test, a computer must be able to imitate a human well enough to fool interrogators. In his essay Turing discussed a variety of possible objections, and presented a counterargument to each of them.
Duration
Postpartum blues may last a few days up to two weeks. If symptoms last more than two weeks, the individual must be evaluated for postpartum depression. Causes
The causes of postpartum blues have not been clearly established. Most hypotheses regarding the etiology of postpartum blues and postpartum depression center on the intersection of the significant biological and psychosocial changes that occur with childbirth. Psychosocial causes
Pregnancy and postpartum are significant life events that increase a womans vulnerability for postpartum blues. Even with a planned pregnancy, it is normal to have feelings of doubt or regret, and it takes time to adjust to having a newborn. Feelings commonly reported by new parents and lifestyle changes that may contribute to developing early postpartum mood symptoms include:
Fatigue after labor and delivery
Caring for a newborn that requires 24/7 attention
Sleep deprivation
Lack of support from family and friends
Marital or relationship strain
Changes in home and work routines
Financial stress
Unrealistic expectations of self
Societal or cultural pressure to "bounce back" quickly after pregnancy and childbirth
Overwhelmed and questioning ability to care for baby
Anger, loss, or guilt, especially for parents of premature or sick infants

Risk factors
Most risk factors studied have not clearly and consistently demonstrated an association with postpartum blues. These include sociodemographic factors, such as age and marital status, obstetric factors, such as delivery complications or low birth weight.Factors most consistently shown to be predictive of postpartum blues are personal and family history of depression.