Assumptions

27 Apr 2017, Manish Padhi

Every argument contains a few propositions which act as a base.  But there are some propositions, an author deliberately leaves as they are obvious to the reader.

For example, If A suggests B to go to ENT specialist as B is suffering from Throat infection, A assumes that a specialist doctor may diagnose better than a normal physician.

So an Assumption is an unstated premise.

In finding assumption to any question, we need to search for the reason which gives strength to the argument and without which the entire argument may not hold good. 

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Note: Always remember, Assumption is an unstated premise from the author point of view which may not be true for the reader.

For example, A suggests B, Let us go to XYZ movie, as Mahesh acts in that.
Here A assumes if Mahesh acts in a movie, they are worth watching.  But from B point of view, It may not be true.

Examples

Directions : In each question below is given a statement followed by two assumptions numbered I and II. An assumption is something supposed or taken for granted. You have to consider the statement and the following assumptions and decide which of the assumptions is implicit in the statement.

Give answer (a) if only assumption I is implicit; (b) if only assumption II is implicit; (c) if either I or II is implicit; (d) if neither I nor II is implicit; and (e) if both I and II are implicit.

Statement:

“A taxi is required on rent.” - an advertisement.

Assumptions:

I. All types of vehicles are available on rent.
II. People will respond to the advertisement.

(b). The statement says that a taxi is required on rent. It does not say that any vehicle is required. So the statement cannot be said to have assumed that any vehicle is available for rent. But II is obviously implicit; whenever an advertisement is made it is assumed that people will respond to it.

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Statement:

“Buy pure ghee of company ABC.” - an advertisement in a newspaper

Assumptions:

I. No other company supplies pure ghee.
II. People read advertisements.


(b) I is definitely not mentioned in the advertisement. II is implicit, otherwise Company ABC wouldn’t have given the advertisements.

Statement: 

Of all the TV sets manufactured in India, ‘XYZ’ brand has the largest sale.

Assumptions:

I. The sale of all the TV sets manufactured in India is known.
II. The manufacturing of no other TV set in India is an large as ‘XYZ’ brand TV.


(a) Unless the sale of all TV sets manufactured in India was known, the statement could not have been made. Hence I is implicit. II is not implicit because we do not know about manufacturing; we know only about sales.

XYZ brand has the largest sale but it may not be the largest manufacturer of TV sets. May be Y company manufactured more sets than XYZ does but it exports all its sets. In that case Y is a bigger manufacturer but its sale in India would be lesser than that of XYZ.

 

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