disadvantages of exploratory testing

1Learning to use the application or
2software system is a challenge
3Replication of failure is difficult
4Determining whether tools need t
5o be used can be challenging
6Determine the best test cases to 
7execute can be difficult
8Reporting of the test results is a 
9challenge as the report doesn't have 
10planned scripts or cases to compare
11with the actual result or outcome
12Documentation of all events during 
13execution is difficult to record
14Don't know when to stop the testing as 
15exploratory testing has definite test cases to execute.