What is the current state of the law in the context of ineffective assistance of counsel?

"'"Reviewing courts defer to counsel's reasonable tactical decisions in examining a claim of ineffective assistance of counsel [citation], and there is a 'strong presumption that counsel's conduct falls within the wide range of reasonable professional assistance.'" [Citations.] "[W]e accord great deference to counsel's tactical decisions" [citation], and we have explained that "courts should not second-guess reasonable, if difficult, tactical decisions in the harsh light of hindsight" [Citation.] "Tactical errors are generally not deemed reversible, and counsel's decisionmaking must be evaluated in the context of the available facts." [Citation.]'" (People v. Jones (2003) 29 Cal.4th 1229, 1254.)