There are two types of complexity in software development process. They are essence and accidents complexity. Essence complexity are inherent in the nature of the software whereas accident complexity is such, that today attend its production but that are not inherent. Accidental complexity arises due to hardware constraints, awkward programming languages. Most of the programmers are still devoted towards solving accidental problem but now the time has come to address essential complexity. Essential complexity include conformity, changeability, flexibility, invisibility. In conformity, the challenge is to run new software on a system where other software systems were running. Changeability makes software dependent on the technological advancement of its surroundings. Because software is invisible, it becomes very difficult to sketch the clear idea of how the final product looks or perform. The development of high level languages like Fortran, C, C++ have solved the accidental difficulties to a great extent. There is no one silver bullet but a series of innovations could lead to a significant improvement. Ada language, object-oriented programming, artificial intelligence could play vital role to achieve those improvements and are hopes for the silver. Building expert systems is not an easy task but systems like graphical programming, program verification, automatic programming play vital role in software development. As large number of software engineers are involved in software development, large number is developed daily. It leads to an attack on conceptual essence and sometime it is more reliable to buy the already built software rather than developing the new one. There is difference between good designers and great designers. There is as much as tenfold difference between an ordinary designer and great one so they should be treated well and provided with higher status.
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