to `confront`, thereby obtaining a `confrontation` object.
* Easy to asses what problems were found and to document what was checked (saved in `validator` object). 
*  &lt;span style="color:red"&gt;Beware: Non-standard object storage might cause trouble!&lt;/span&gt;   

---

###Make `validator` object

.footnotesize[

```r
val1 &lt;- 
 validator(
   `Adult president` = ageAtInauguration &gt;= 18,
   `Alive at inauguration` = dateOfDeath &gt;= presidencyBeginDate,
   `Positive first name` = firstName*2 &gt;