I would just like to illustrate the confusion with examples
Ex 1 - I own less land than earlier - Correct
Reasoning - No direct object after own. What is compared is owning land now Vs owning land earlier
Complete sentence - I own less land than earlier (owned)
Ex 2 - I own land less than earlier - Correct
Reasoning - Comparison is between owning land now Vs earlier and earlier has to be an object here as it cannot be the doer of any action or take an object
Breaking sentence into 3 interpretations - 1. I own land, 2. I own earlier(Illogical), 3. Earlier owns land the same as I do (Illogical)
Complete sentence - 1. I own land less than (I did) earlier - Logical, 2. I own land less than (I own) earlier - illogical, 3. I own land less than earlier (does) - Illogical
Hence in Ex-2, not adding (I did) does not make for ambiguity as there is just 1 logical interpretation coming out
Ex 3 - I like Joey more than Rachel - Incorrect
Reasoning - There is no clear object in this. Rachel can be the doer of the action as well here
Breaking sentence into interpretations - 1. I like Joey - logical, 2. I like Rachel - logical, 3. Rachel likes Joey - logical
Completing sentences - 1. I like Joey more than (I do) Rachel - Logical, 2. I like Joey more than Rachel (does) - logical
Hence in Ex-3 not adding (I do) leads to ambiguity as there are 2 logical interpretations.
I'm really confused with this. Please help