$\backslash$table$[[\backslash$table$[[$Risk$],[$Description$],[$Brief summary$],[$of the risk.$]],\backslash$table$[[$Impact$],[$Description$],[$What will$],[$happen if the$],[$risk is not$],[$mitigated or$],[$eliminated$.]],\backslash$table$[[$Impact$],[$Level$],[$Rate$],[1($low$)],[$to $5],[($high$)]],\backslash$table$[[$Probability$],[$Level$],[$Rate$],[1($low$)$ to $5],[($high$)]],\backslash$table$[[$Priority$],[$Level$]],A,\backslash$table$[[$Owner$],[$Who$\text{'}$s$],[$responsible$?]]],[\backslash$table$[[$Leads from$],[$roof during$],[$rain make the$],[$floor slippery.$]],$Slips and falls,$3,5,15,\backslash$table$[[-$ Order$],["$slippery$],[$when wet"$],[$signs$],[-$ Have mops$],[$on hand$],[-$ Fix roof$]],$Allen$],[\backslash$table$[[$Shortage of$],[$eye protection$]],\backslash$table$[[$Increase in$],[$injuries$.],[$Production$],[$delayed$.],[$Increased$],[$insurance$],[$premiums$.]],5,1,5,\backslash$table$[[-$ Increase$],[$supply$],[-$ Low$],[$inventory$],[$warnings$],[-$ Find$],[$alternative$],[$suppliers$]],$Linda$]]$

Why might "shortage of eye protection" have a lower probability level than does "leaks from the roof"?