Synthetic biology is described as a new field of biotechnology that models itself on engineering sciences. However, this view of synthetic biology as an engineering field has received criticism, and both biologists and philosophers have argued for a more nuanced and heterogeneous understanding of the field. This paper elaborates the heterogeneity of synthetic biology by clarifying the role of design and the variability of design methodologies in synthetic biology. I focus on two prominent design methodologies: rational design and directed evolution. (...) Rational design resembles the design methodology of traditional engineering sciences. However, it is often replaced and complemented by the more biologically-inspired method of directed evolution, which models itself on natural evolution. These two approaches take philosophically different stances to the design of biological systems. Rational design aims to make biological systems more machine-like, whereas directed evolution utilizes variation and emergent features of living systems. I provide an analysis of the methodological basis of these design approaches, and highlight important methodological differences between them. By analyzing the respective benefits and limitations of these approaches, I argue against the engineering-dominated conception of synthetic biology and its “methodological monism”, where the rational design approach is taken as the default design methodology. Alternative design methodologies, like directed evolution, should be considered as complementary, not competitive, to rational design. (shrink)

Synthetic biology offers a powerful method to design and construct biological devices for human purposes. Two prominent design methodologies are currently used. Rational design adapts the design methodology of traditional engineering sciences, such as mechanical engineering. Directed evolution, in contrast, models its design principles after natural evolution, as it attempts to design and improve systems by guiding them to evolve in a certain direction. Previous work has argued that the primary difference between these two is the way they treat variation: (...) rational design attempts to suppress it, whilst direct evolution utilizes variation. I argue that this contrast is too simplistic, as it fails to distinguish different types of variation and different phases of design in synthetic biology. I outline three types of variation and show how they influence the construction of synthetic biological systems during the design process. Viewing the two design approaches with these more fine-grained distinctions provides a better understanding of the methodological differences and respective benefits of rational design and directed evolution, and clarifies the constraints and choices that the different design approaches must deal with. (shrink)

THE EXISTENTIAL CONDITION OF THE IJAWS IN THE EMERGING SOCIO-ECONOMIC AND POLITICAL MILIEU OF NIGERIA. By Ebo Socrates, PhD. -/- Nigeria is a hybrid nation of over two hundred and fifty ethnic nationalities. The Ijaws as a people among the multitude of peoples that have come to constitute the geographic expression and sovereign entity known as Nigeria, find themselves enmeshed in the fluctuating socio-economic milieu of Nigeria. They as well as other ethnic nationalities that constitute Nigeria, found themselves bound to (...) the contingencies and exigencies of the nation-state called Nigeria not by act of will or treaty but by the Lugardian fiat which in itself was a full expression of the British imperialist will to power. By fiat and history, a country was made; the country is Nigeria, its people simply are; a fact of history. Their mode of being however, is a confluence of contraction and progress. So many models of nationhood explicates Nigeria. But Nigeria, is undeniably a “torn” nation. In the words of Samuel Huntington, a nation of conflicting civilizations: the Islamic civilization and the Judeo-Christian civilization. The Ijaws, an oil rich minority tribe found themselves entwined and involved in the destiny of this phenomenal nation called Nigeria. Has such an entwinement been a curse or blessing? Have the Ijaws significant power in the organogram of the Nigerian nationhood? Are they tossed about by the tide and flow of events or are they active movers in the making of the Nigerian history? This paper critically looks at these existential realities and elucidates the existential condition of the Ijaws in the contemporary Nigeria . (shrink)

Among critical concepts in Mulla Sadra's thought, which, of course, cannot be discussed separately between the parts. This is because the basic rules in philosophical discourse are universal traits that make it approached from various directions as a unified form of reality. One of Sadra's famous thoughts is the concept of the soul, which is related to the roots of his philosophical doctrine of being. The significance of the discussion of the soul by Mulla Sadra becomes increasingly crucial given the (...) discourse about the soul, especially in the debate of modern European philosophy in such a way that are absurd forms in Islamic religious doctrine. Therefore, seeing the relationship between the two models of approach to the soul is not only the only way to understand the universal message of the Islamic treatise about the soul but also creates a model of dialogue volume two of Ibn Rusyd-Ghazali becoming Mulla Sadra versus Modern Europe. (shrink)