17考试orz第一篇argument求修改求意见，急！！！

jieyushanren

Merely based on unfounded assumption andsuspicious evidence,the statement draws a conclusion that the so-called Paleanbaskets were not uniquely Palean.To substantiate the conclusion,the arguerpoints out evidence that a"Palean" basket was also discovered inLithos,an ancient village across the Brim River which is very deep and broadfrom Palea.In addition,he indicates that the ancient Paleans could have crossedit only by boat,and no Palean boats have been found.At first glance,theauthor's argument appears to be somewhat convincing,but further reflectionreveals that it omits some substantial concerns that should be addressed tosubstantiate the argument.In my point of view,this argument suffers from threelogical flaws.  

First of all,the author claims that theBrim River was very deep and broad,because it is now.The author assumes withoutjustification that the background conditions have remained the same atdifferent time.The assumption is unwarranted because things rarely remain thesame over extended periods of time.There are likely all kinds of differencebetween the past Brim River and the present Brim River.The Brim River might beshallow and narrow in the past which was very easy to cross for ancientPaleans.  

Secondly,the argument assumes too hastilythat the depth and spaciousness of the Brim River will necessarily result inthe only choice of boat when crossing the river.However,maybe the ancientPaleans just went by a roundabout way to the headstream of the river which wascertainly narrow and shallow.Moreover,they could go across the river in winterwhen it was frozen.As a result, the fact that the Brim River is deep and broadis not sufficient for the prediction that boat was the only practical way forcrossing the river.  

Thirdly,the author assumes that the Plaleandidn't cross the river by boat because no Palean boats have beenfound.However,as we all know,ancient boats were usually made of wood which arevery easy to root.In consquence,we cannot prove that the Paleans didn't crossthe river by boat.

Overall,the reasoning behind that theso-called Palean baskets were not uniquely Palean is anything but logical.Evenassuming the Brim River was deep and broad in the past,the author fails toconsider other possible ways to cross the river.Even the Palean people couldonly cross the river by boat,the author fails to prove no boat existed.Inconclusion,to persuade me to believe that the so-called Palean baskets were notuniquely Palean,the author must also provide more convincing evidence and fullydevelop his opinion.

Argument1，求看到求意见求修改，谢过各位！！！