delivered the opinion of the court:
The plaintiff as administratrix of the estate of her son obtained a judgment for $2,000 in a wrongful death action. The son was killed as a result of an automobile accident occurring on July 3, 1964, when a rendering truck owned by the defendant and driven by the decedent’s father crashed into a concrete bridge abutment in Macon County, Illinois. Judgment on the verdict was entered by the circuit court of McLean County. Motion for new trial was denied and two issues are presented for our consideration. (1) Did the trial court improperly restrict the plaintiff’s inquiry into the character, personality and good points of the decedent and (2) is a jury award of $2,000 damages to his mother adequate for the death of an 18-year-old son as a matter of law?
The first point raised by the plaintiff is not argued in her brief and under Supreme Court Rule 341(e)(7) (Ill. Rev. Stat. 1971, ch. 110A, sec. 341(e)(7)), it is stated that “points not argued are waived and shall not be raised in the reply brief, in oral argument, or on petition for rehearing”. The mere assertion of error without explanation is not sufficient to preserve that error for review. (Wright v. McGee, 131 Ill.App.2d 522, 264 N.E.2d 882; Ray v. Cock Robin, Inc., 10 Ill.App.3d 276, 293 N.E.2d 483; Quinn v. Larson, 77 Ill.App.2d 240, 222 N.E.2d 239; Flynn v. Vancil, 41 Ill.2d 236, 242 N.E.2d 237.) The reason for this rule and these decisions are perhaps bluntly stated in In re Estate *148 of Kunz, 7 Ill.App.3d 760, 763 288 N.E.2d 520: “Reviewing courts are entitled to have the issues clearly defined, to be cited pertinent authorities- and are not a depository in which an appellant is to dump the entire matter of pleadings, court action, argument and tire research as it were, upon the court.” We therefore conclude that the issue of undue restriction in evidence has been either waived or abandoned.
The second point that the jury award is inadequate as a matter of law poses for this court the same evidentiary vacuum that was presented to the jury. The testimony was that the decedent was rather well built, weighed about 185 pounds, was in good health at the time of his death, had participated in athletics and liked to sing. He had not graduated from high school, had never held what could be termed a steady job and was mentally handicapped to the extent that he was enrolled in the Educable Mental Health Program at Illinois State University. His mother testified that he earned $60 — $70 per week and spent about $50 for his own purposes and gave the rest to her. The record is silent as to the nature or extent of his handicap. The record is silent as to any progress or lack of -progress he had or was making in the EMH Program at Illinois State University. The difficulties presented in establishing damages for pecuniary injuries resulting from a wrongful death to the next of kin of a decedent is discussed at length in three separate opinions filed in Flynn v. Vancil, 89 Ill.App.2d 368, 232 N.E.2d; and considered by the Illinois Supreme Court on appeal in 41 Ill.2d 236, 242 N.E.2d 237. It is not debatable but that a presumption arises of loss to a lineal descendant from a wrongful death. That presumption is to be considered if there is no other evidence on the issue, or if there is evidence that presumption should be weighed by the jury with such other evidence. Flynn squarely holds that where the evidence shows an incurable, congenital physical defect impairing the health of a 2-week-old child, a jury is warranted in finding that even though there may be liability, there is no damage to the administrator for the benefit of a surviving father or mother.
Under the evidence in this case, we cannot say that the size of this verdict has no relationship to the pecuniary injuries suffered by the mother nor that the $2,000 award was the result of any passion or prejudice, on the part of the jury. There is no evidence in this record as to the nature of the decedent’s handicap, there is no evidence as to his life expectancy, and there is no evidence as to his progress, if any, in the special school. As was stated in Naslund v. Watts, 80 Ill.App.2d 464, 474, 224 N.E.2d 474, “The amount of damages to be awarded in a wrongful death action cannot be determined with mathematical certainty, and rests largely with the discretion of the jury. Jury awards, *149in such cases, should not. be set aside on review unless they are evidently the result of passion or prejudice, or bear no relation to recovery for the pecuniary injuries to lineal descendants.” In Naslund, a $15,000 verdict for the death of a 77-year-old woman with a 7-year life expectancy was upheld. She had an annual income of $1500 from a farm and $68 per month from Social Security. In Keel v. Compton, 120 Ill.App.2d 248, 256 N.E.2d 848, the decedent was 63 years old and had a life expectancy of 14 years. His earnings were $6000 plus for the 2 years preceding his. death. The trial court set aside a $5000 verdict and indicated that the jury disregarded the court’s instruction insofar as it related to loss of support. These cases suggest the type of proof required to establish proof of substantial loss of income. In this case, death occurred in 1964 and did not reach trial until 1972. We see no basis for holding that the jury subverted its duty under the evidence or failed to follow instructions. The proof of pecuniary loss is too anemic and speculative for us to say as a matter of law that the $2000 is inadequate to compensate for the reasonably expected pecuniary loss. The judgment therefore must be affirmed.
Affirmed.
TRAPP, J., concurs.