All A, B, C, D, E, and F

I am going with option 3. A,B,D, E and F.

Option 3. Spiders need not be point of focus, since there are innumerable other insects. Even in the absence of spiders, pigeon poop would have been present (maybe in a smaller amount??).

Option A:Necessary cause

Option B-G:Sufficient cause(s)

A, B, C, D & F 

since the Pigeon poops can happen not only because of eating spiders but also by eating many other things.

 

Sumanth.

It has to be all becuase of the simple reason that the solution fixed the issue, if any one of these would have got excluded then the problem would have not go fixed...

Guess the answer is 4.

6th option

Hi Vish, am eagerly waiting for knowing your final answer. Pls advise.

The root cause for this problem was the artificial light 

My Answer is only A because of this other events followed.

But this option is not there but would like to go ahead with this reply.

 

 

The root cause for this problem was the artificial light 

My Answer is only A because of this other events followed.

But this option is not there but would like to go ahead with this reply.

 

Hi, Ramkumar

 

Your comment is absolutely on the mark. The root cause is artificial light. Small clarification here - The posed question is about the "cause" being necessary and sufficient for the "next event".  Here, we are not just referring to the root cause and the end result (although, these two matter the most), we wish to refer to each cause in the series. 

Hi Vishwadeep Sir,what is the right answer or where can we find correct answer?

All – A, B, C, D, E, and F

All – A, B, C, D, E, and F

Option 1 - A, B, C, D, and E

Use of chemicals is just because of E, which is due to D and so on

 

 

 

Hi everyone,

 

A good set of responses and I appreciate your interest in this question. The three strongest contenders are Option 1, 2 and 6. 

 

Dipak, Jaya, Sachin, Viswanathan, Ayush, fcaih0, Vijayasekar, Sahil, Sagar, SKS Rao, Shoukat, Anshu Goel, Vasudha, have responded with Option 6 - All. 

Ankit, Inderjeet, Lalith, Sumanth have mentioned Option 2 - A, B, C, D, F

Madhu, Krishnamurthy, Abir, Vidya, R S Bahadur, LM Suresh Kumar, Deepa, Sunil Nair - Option 1 - A, B, C, D and E

 

Well, we can think and discuss more -

• Question related to Option 1 - Is F (Use of chemicals) necessary as well as sufficient to explain Rapid Erosion?
• Question related to Option 2 - Is E (Pigeon poops) necessary as well as sufficient to explain F (Use of chemicals)?
• Question related to Option 6 - Are all the causes (A-F) necessary and sufficient to explain their respective next steps? 

Finally, what is the option you prefer - 1, 2 or 6? Well, we can change our choices if we want to.

 

Sir,my answer is still option 6,all the causes are necessary & sufficient to explain their respective next step. Option 1 & 2 are not the strongest contenders. For eg. We have safeguarded our balcony by using pigeon protection net just to keep it clean,pigeons are still there but we have taken action for main cause i.e.pigeon poops.

In the given scenario, the problem has been solved and that too, by switching the lights on after dusk and not by working on any other events. So, all the events are sufficient and necessary causes except F (use of chemicals). Therefore, I prefer to hold on to Option 1 (my original choice)

 

L M Suresh Kumar

In the given scenario, the problem has been solved and that too, by switching the lights on after dusk and not by working on any other events. So, all the events are sufficient and necessary causes except F (use of chemicals). Therefore, I prefer to hold on to Option 1 (my original choice)

 

L M Suresh Kumar

 

Dear Suresh, 

 

I feel that chemical is not a mandatory effect of Pigeon poops. So, probably, Pigeon poops is not a sufficient cause to ensure use of chemicals as it (chemicals) was a human choice.  

While the difference in opinion is welcomed, my opinion is to go with option 6 - all (for practical purposes). 

 

I agree that "if pigeon poops happen, the use of chemicals must happen" may be considered incorrect by some of you as there is an element of choice here. Probably, there is an element of choice or availability of options at each stage. For the practical problem-solving purpose, (in this case) as the Archaeology department is conscious and committed to its objectives, and alternative cleaning solution is unavailable - I am of the opinion that pigeon poops are a sufficient cause for use of this harmful chemical.

 

We shall soon have another discussion on the practical use of "necessary" and "sufficient" in root cause analysis and problem-solving. Meanwhile, this discussion is open for more comments and opinions.  

 

Dear Suresh, 

 

I feel that chemical is not a mandatory effect of Pigeon poops. So, probably, Pigeon poops is not a sufficient cause to ensure use of chemicals as it (chemicals) was a human choice.  

Pigeons Attracted (D) is even not sufficient cause to ensure pigeon poops (E). Here choice is with pigeon (Alternate Solution:man can train pigeons). I think pigeon adds beauty to the monument so we can think of alternate solution

1.coating on monument (after some time poops get peeled of automatically because of chemical reaction). This thought I got while glancing through VK sir reply.   

The answer is All-A, B, C, D, E, and F.

 

Every RCA is practically a drill down exercise which means the necessity of the presence of sufficient triggers is responsible for the event to occur.

Just like a pull system, only if 'An' is present will the consecutive step/activity be triggered. It is a chain of events which can be broken down only after removal/handling of the primary root cause.

 

Regards,

Dr. Bhamini Thukral

My pick is All 6.

Option 6 - All. 

6.      All – A, B, C, D, E, and F - neet both the criteria.