Plate 2Early Palaeolithic Tools (500,000- 250,000 BC) (Tamil Nadu, India)	2B Stone Age Tool (18000-15000 BC)

(Source:http://www.google.co.in/#hl=en&sclient=psyab&q=palaeolithic+tools&oq=Palaeolithic&
gs_l=hp.1.1.0l4.2029323.2037498.0.2039612.12.6.0.6.6.0.380.1393.0j2j3j1.6.0.les%3B..0.0...1c
.1.fKc_8ySNP64&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=7c9a073b2a3dcfe6&bpcl=35466521&b
iw=984&bih=387 ; Oct. 23, 2012)

At the early stage the shape and sizes have determined the fundamental design concepts. As mentioned above the available indigenous material has played very significant role. However, the problem identification has shown the basic ingredient in innovative design paradigm. Initial design did not produce the desired result (plate 2). 250,000 years back the logical attempt to create perfectly balanced (equidistant) cantered tool caused lot of difficulties, which became quite reasonable during the Lower Palaeolithic Period (plate 2B). The Stone Age started producing much more logical and skilful tools for better functioning. One must try to imagine each step of perfection took thousands of years, which seems so obvious today.

In order to survive food and enemy (nature and other living beings) both are the prime consideration for man. Problem identifications are the most crucial at this stage. For the purpose of survival human beings needed the following basic tools- Chopping, Cutting, Hammering &Piercing. Each tool has very specific job. Once home-sapiens became community living beings, building shelter, acquiring food and defending against other obstacles became the prime concern.