Research as a human activity: early
days and consolidation
At a general level, research activity has been linked
to human development [1,2]. With the advent of Homo sapiens, the evolutionary
process initiated, in the hominid and primate ancestors, continues. Several
variants of the human being arise that, due to the effects of adaptation to the
environment, prospered or disappeared. This "wise man" was
characterized by a remarkable brain growth, walked in a bipedal form (Homo
erectus), possessed the characteristic five fingers with opposable thumb in each
hand and formed nomadic groups that spread throughout the continents, from
Eurasia and Africa, in search of food and moderate climates [3]. This
incomparable intelligence allowed him or her to use his or her hands to
manufacture hunting or building materials (Homo habilis), perfect guttural
growls to generate sounds close to language, learn to communicate by means of
signs; his or her facial features moved away from those of the primal primate
to adopt the features we now possess. Of these ancestors are dated remains so
ancient that anthropologists agree that the so-called «prehistory» is one of
the longest periods of humanity, which would comprise the appearance of
man-hominid and the emergence of the first human tribes, characterized by
sedentary activities that have been traced through cultural vestiges, such as
pictograms, pottery or writing [4]. Therefore, it is estimated that prehistory
covers between the year 500.000 and the year 4.000 a.c [5]. The prehistoric
ancestor laid the foundations of what would become the current human being, and
has been the only species on the planet that took advantage of natural
resources to improve its quality of life; a characteristic that prevails to
this day [6]. It is not surprising, then, that in this first human being, other
intrinsic qualities that accompany our species were born: curiosity, the use of
imagination and the symbolic capacity to interpret reality. In this way, the
first existential questions arose about the universe and the role of humans in
the cosmos they would look at the stars in the night sky, the infinity of the
sea or the inexhaustible horizon, wondering: what are they? and why are they
there?, to become an even more disturbing question: who am I and what is my
role in all this immensity? [7].
Exhausted mythological explanations, associated with
higher divinities, a new kind of vision about perceptible reality was generated
in the human being [6]. By the 5th century BC, a mode of thought based on
obtaining true knowledge by cause was developed in Ancient Greece, which
surpassed the archaic way of knowing exclusively by means of senses and simple
empirical reasoning [doxa]-subjective and limited-, in favor of a conceptual
approach to knowledge grounded in the logical structuring of cause and
consequence [episteme] [8]. One of its greatest exponents was Aristotle (384 -
322 BC) who, in his Posterior Analytics, indicates (or rather teaches) that
knowledge close to the truth [alêtheia] should set out its basic principles, on
the basis of demonstrations, to draw concrete conclusions about them a
procedure that, after being purified over the centuries, continues to this day.
From Aristotle, the Greeks differentiate two types of knowledge: the ability to
relate principles (episteme) and the superior ability to understand those
principles, which they called "intelligence" [nous] [9]. Hence the
word "science" comes from the Latin ‘scientia’: the equivalent of the
Greek ‘episteme’. Aristotle based his model of knowledge acquisition on the
geometric method, so widespread among the Greek sages and that would
subsequently address Euclid, in which "mathematical precision"
explains the universal order (cosmos), which is knowable by man through logical
reason. Aristotle distanced himself from the inductive consideration of knowledge
-raised by Plato- and promoted a deductive system of knowledge based on the
verification of explanatory theses of reality that are general and universalist
[10]. Nevertheless, not all human knowledge behaves with the precision of
mathematics, and often obeys anarchic principles of conflicting forces [11].
For example, historical knowledge deals with human events that are not governed
by verifiable and predictable general rules. For that reason, the Greeks
considered that science could not be done with History, as well as with
Biology, Chemistry and Physics, which do not allow to be generalized through
postulates or axioms, but are based on a contrary -inductive- method, from
which data are extracted experimentally [12]. Aristotle himself realized this,
because observation and empirical experience are unique in that enable the
classification of individuals in nature. Thus, since the emergence of Western
philosophy in Greece -as epistemological foundation of knowledge- there has
been a distinction between an experimental science (to differentiate it from
experience), of an empirical nature, that intervenes and modifies the elements
that it studies; and a science based on observation, which takes as object of
study a part of reality, as it is given in sensitive knowledge, without any
elaboration or manipulation [13]. Chemistry would be an example of experimental
science, since it is based on the combination of elements or substances by the
scientist and elementary astronomy, an example of «observational science»,
since it does not modify or originate anything, but is limited to observing the
motion of the stars [14]. At the same time, both incorporate measuring and data
collection elements, quantifiable and verifiable (which will later give rise to
scientific positivism) [15]. The study related to human beings and their
behavior was relegated to the abstract terrain of philosophy, along with
ethics, politics, society... and education itself (Camacho Verdugo and Morales
Paredes 2020), which originates from the Greek term paidagogós [pedagogy] which
means paidos (child) and gogy ("lead" or "carry"),
referring to the first pedagogues, who were slaves in charge of taking children
to school [16]. This concept would remain imperturbable until the middle of the
20th century with the advent of anthropology, sociology and psychology. In this
way, over the centuries, each science (experimental or observational) acquires
its own status, characterized by principles and methodology that are particular
to it, but still linked to a philosophical vision and sense.This is the case of
the Middle Ages, in which coexisted the diversity of sciences and their methods
in line with metaphysics as "first science", which gave reason to the
others [17]. hat is, the Greek approach was retaken, which in Latin was defined
as cognito certa per-causas [obtain certain knowledge by causes]. Faith and
reason were linked and mutually validated [18]. With the Renaissance modern
science began, closely linked to the rescue of the work of ancient thinkers
such as Archimedes, Euclid and Pythagoras and the revitalization of Platonic
philosophy as opposed to Aristotelian scholastics, worn in previous centuries
[9]. Humanism will encompass all the expressions of the human being: art,
philosophy and science, which will remain in force until today; in a wide
period that spanned from the fourteenth century to the eighteenth century A.D.,
a series of changes occurred in Western thought, which meant an awakening to
the wonders of nature and the role of the human being in the universe [1]. At
this point, a renewing mentality occurred, for Western culture that was
manifested in the separation of philosophy and science, faith and reason [19].
Galileo worked on his scientific process based on simplicity - which challenges
the doctrine of the church and its conception of the Cosmos- being prosecuted
for it [20]. Kepler established the conditions of intelligibility of a
scientific theory. Newton defined the notions of motion, space and time and
their mechanical application; Leibniz offered the infinitesimal calculus
attached to his theory of infinity. These and many other ideas, at the time
"revolutionary", spread throughout Europe with the invention of the
printing-press by Johannes Gutenberg. New inventions of measurement and
calculation emerged, which gave man greater dominion over nature, overcoming
mysticism which allowed, among other things, that in 1492 Christopher Columbus
reached the American continent looking for an alternate route to China (the
Indies). It was a period in which mathematics was conceived as a "divine
language", a means of knowing the design and order of the universe, a
whole [21]. The period of greatest peak for science happened between the
seventeenth and eighteenth centuries, characterized by the search for a
definitive method that would enable science to reach general results (theories
and laws) that did not depend on or were attributed to verifications of
philosophical postulates what would be called later as scientific method. This
accumulation of contributions from thinkers and scientists (such as Francis
Bacon, David Hume, William Whewell, among others), would lead to the widespread
acceptance of the principles that would characterize, henceforth, science and
its derivatives:
- Science
does not represent reality, it interprets it, since the human mind is limited
to understand the totality of the world.
- Science
is based on logical and rational theories, on a continuous process of
construction of knowledge and interpretations.
- The
value of observations is relative, since they depend on the theory on which the
observer is based; therefore, scientific theories must be refutable or
falsifiable experimentally.
- Science
always has to question itself leaving behind all dogma, which makes it the best
tool to understand sensitive reality (knowledge).
- Thus,
the only valid knowledge is empirical, verifiable through logical reason and
supported by numerical systems (positivism) [15].
The
importance of the scientific method is such that without it science cannot develop:
it is the strategy of scientific research that is applied through the
quantitative methodology, focused on the object of study and statistical
analysis to verify hypotheses from their explanation. Which is why the
scientific method bases its results on the rigorous examination of numerical
data from the field of statistics (variables, percentages, averages), which can
be measured and quantified. Wherefore, the scientific character will be linked
to the characteristics of the quantitative methodology: be rigorous, objective,
verifiable, seeking to identify patterns and verify hypotheses, theories; with
this, the operation of universal laws can be discovered [22]. From that moment
on, it is considered that all disciplines that use the scientific method are
science, for example, Biology and Physics; but, again, the disciplines that do
not use it, such as Psychoanalysis, Geography or Anthropology, are relegated.